diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
new file mode 100644
index 0000000..cd5e81d
--- /dev/null
+++ b/.github/workflows/docs.yml
@@ -0,0 +1,48 @@
+name: docs
+
+on:
+  push:
+    branches:
+      - main
+    # Alternative: only build for tags.
+    # tags:
+    #   - '*'
+
+# security: restrict permissions for CI jobs.
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies
+        run: pip install -e .
+
+      - name: Build docs
+        run: pdoc -o docs/pdoc -d google datasus_db
+
+      - name: Upload docs artifacts 
+        uses: actions/upload-pages-artifact@v2
+        with:
+          path: docs/pdoc
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - id: deployment
+        uses: actions/deploy-pages@v2
diff --git a/.gitignore b/.gitignore
index f872300..7a0e370 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,4 @@ __pycache__
 *.parquet
 .venv
 dist
-
+docs/pdoc
diff --git a/datasus_db/__init__.py b/datasus_db/__init__.py
index 09f919c..94b4539 100644
--- a/datasus_db/__init__.py
+++ b/datasus_db/__init__.py
@@ -1,6 +1,28 @@
-from .datasources.auxiliar import import_auxiliar_tables
+"""
+[![PyPI version](https://badge.fury.io/py/datasus-db.svg)](https://pypi.org/project/datasus-db/)
+
+A python package to **download and import** public available data from **DATASUS's** ftp servers into a [DuckDB](https://duckdb.org/) database.
+
+
+# Import functions
+Bellow is the list of all **import functions**:
+- `datasus_db.datasources.sih_rd.import_sih_rd`
+- `datasus_db.datasources.sim_do.import_sim_do`
+- `datasus_db.datasources.po.import_po`
+- `datasus_db.datasources.ibge_pop.import_ibge_pop`
+- `datasus_db.datasources.ibge_pop_tcu.import_ibge_pop_tcu`
+- `datasus_db.datasources.auxiliar.import_auxiliar_tables`
+
+
+## Datasources
+The list of all available DATASUS's datasources can be seen here: https://datasus.saude.gov.br/transferencia-de-arquivos/
+
+If `datasus_db` is missing a datasource that you need, feel free to create an issue here: https://github.com/mymatsubara/datasus-db/issues/new
+"""
+
+from .datasources.sih_rd import import_sih_rd
+from .datasources.sim_do import import_sim_do
 from .datasources.po import import_po
 from .datasources.ibge_pop import import_ibge_pop
 from .datasources.ibge_pop_tcu import import_ibge_pop_tcu
-from .datasources.sih_rd import import_sih_rd
-from .datasources.sim_do import import_sim_do
+from .datasources.auxiliar import import_auxiliar_tables
diff --git a/datasus_db/cnv.py b/datasus_db/cnv.py
index 1133373..84001f2 100644
--- a/datasus_db/cnv.py
+++ b/datasus_db/cnv.py
@@ -1,3 +1,7 @@
+"""
+Module with functions to deal with DATASUS convetion files (*.cnv), which are usually file which maps ids to a readable names.
+"""
+
 import io
 import re
 import polars as pl
diff --git a/datasus_db/datasources/__init__.py b/datasus_db/datasources/__init__.py
index e69de29..4f6f728 100644
--- a/datasus_db/datasources/__init__.py
+++ b/datasus_db/datasources/__init__.py
@@ -0,0 +1,3 @@
+"""
+Module with the implemented DATASUS's datasources imports.
+"""
diff --git a/datasus_db/datasources/auxiliar.py b/datasus_db/datasources/auxiliar.py
index 805c55b..2538eee 100644
--- a/datasus_db/datasources/auxiliar.py
+++ b/datasus_db/datasources/auxiliar.py
@@ -13,11 +13,16 @@
 
 
 def import_auxiliar_tables(db_file="datasus.db"):
-    """
-    Import auxiliar tables with some datasus codes definitions (eg: municipios, doenças, ...)
+    """Import auxiliar tables with some datasus codes definitions (eg: municipios, doenças, ...)
 
     Args:
-        `db_file (str)`: path to the duckdb file in which the data will be imported to.
+        db_file (str, optional): path to the duckdb file in which the data will be imported to.
+
+    ---
+
+    Extra:
+    - **Municipio data description**: https://github.com/mymatsubara/datasus-db/blob/main/docs/auxiliar/municipio.pdf
+    - **ftp path**: ftp.datasus.gov.br/dissemin/publicos/SIM/CID10/DOCS/Docs_Tabs_CID10.zip
     """
     logging.info(f"⏳ [AUX_TABLES] Starting import...")
 
diff --git a/datasus_db/datasources/ibge_pop.py b/datasus_db/datasources/ibge_pop.py
index 71496c5..4f1e7fd 100644
--- a/datasus_db/datasources/ibge_pop.py
+++ b/datasus_db/datasources/ibge_pop.py
@@ -17,6 +17,12 @@ def import_ibge_pop(db_file="datasus.db", years=["*"]):
     Args:
         db_file (str, optional): path to the duckdb file in which the data will be imported to. Defaults to "datasus.db".
         years (list, optional): list of years for which data will be imported (if available). Eg: `[2012, 2000, 2010]. Defaults to ["*"].
+
+    ---
+
+    Extra:
+    - **Data description**: https://github.com/mymatsubara/datasus-db/blob/main/docs/ibge_pop.pdf
+    - **ftp path**: ftp.datasus.gov.br/dissemin/publicos/IBGE/POP/POPBR*.zip
     """
     logging.info(f"⏳ [{MAIN_TABLE}] Starting import...")
 
diff --git a/datasus_db/datasources/ibge_pop_tcu.py b/datasus_db/datasources/ibge_pop_tcu.py
index 834750d..2985169 100644
--- a/datasus_db/datasources/ibge_pop_tcu.py
+++ b/datasus_db/datasources/ibge_pop_tcu.py
@@ -11,13 +11,17 @@
 
 
 def import_ibge_pop_tcu(db_file="datasus.db", years=["*"]):
-    """
-    Import population estimated per city by TCU (Tribunal de Contas da União).
+    """Import population estimated per city by TCU (Tribunal de Contas da União).
 
     Args:
-        `db_file (str)`: path to the duckdb file in which the data will be imported to.
+        db_file (str, optional): path to the duckdb file in which the data will be imported to. Defaults to "datasus.db".
+        years (list, optional): list of years for which data will be imported (if available). Eg: `[2012, 2000, 2010]`. Defaults to ["*"].
+
+    ---
 
-        `years (list[int])`: list of years for which data will be imported (if available). Eg: `[2012, 2000, 2010]`
+    Extra:
+    - **Data description**: https://github.com/mymatsubara/datasus-db/blob/main/docs/ibge_pop_tcu.pdf
+    - **ftp path**: ftp.datasus.gov.br/dissemin/publicos/IBGE/POPTCU/POPTBR*.zip
     """
     logging.info(f"⏳ [{MAIN_TABLE}] Starting import...")
 
diff --git a/datasus_db/datasources/po.py b/datasus_db/datasources/po.py
index 01a5ae0..ef5ec01 100644
--- a/datasus_db/datasources/po.py
+++ b/datasus_db/datasources/po.py
@@ -9,15 +9,18 @@
 
 
 def import_po(db_file="datasus.db", years=["*"]):
-    """
-    Import PO (Painel de Oncologia) data (since 2013).
+    """Import PO (Painel de Oncologia) data (since 2013).
 
     Args:
-        `db_file (str)`: path to the duckdb file in which the data will be imported to.
+        db_file (str, optional): path to the duckdb file in which the data will be imported to. Defaults to "datasus.db".
+        years (list, optional): list of years for which data will be imported (if available). Eg: `[2013, 2020]` Defaults to ["*"].
 
-        `years (list[int])`: list of years for which data will be imported (if available). Eg: `[2013, 2020]`
-    """
+    ---
 
+    Extra:
+    - **Data description**: https://github.com/mymatsubara/datasus-db/blob/main/docs/po.pdf
+    - **ftp path**: ftp.datasus.gov.br/dissemin/publicos/IBGE/POP/POPBR*.zip
+    """
     logging.info(f"⏳ [{MAIN_TABLE}] Starting import...")
 
     import_from_ftp(
diff --git a/datasus_db/datasources/sih_rd.py b/datasus_db/datasources/sih_rd.py
index e2d0b0e..310d2a9 100644
--- a/datasus_db/datasources/sih_rd.py
+++ b/datasus_db/datasources/sih_rd.py
@@ -9,17 +9,19 @@
 
 
 def import_sih_rd(db_file="datasus.db", years=["*"], states=["*"], months=["*"]):
-    """
-    Import RD (Autorização de Internação Hospitalar Reduzida) from SIMSUS (Sistema de Informações Hospitalares do SUS).
+    """Import RD (Autorização de Internação Hospitalar Reduzida) from SIMSUS (Sistema de Informações Hospitalares do SUS).
 
     Args:
-        `db_file (str)`: path to the duckdb file in which the data will be imported to.
-
-        `years (list[int])`: list of years for which data will be imported (if available). Eg: `[2012, 2000, 2010]`
+        db_file (str, optional): path to the duckdb file in which the data will be imported to. Defaults to "datasus.db".
+        years (list, optional): list of years for which data will be imported (if available). Eg: `[2012, 2000, 2010]`. Defaults to ["*"].
+        states (list, optional): list of brazilian 2 letters state for which data will be imported (if available). Eg: `["SP", "RJ"]`. Defaults to ["*"].
+        months (list, optional): list of months numbers (1-12) for which data will be imported (if available). Eg: `[1, 12, 6]`. Defaults to ["*"].
 
-        `states (list[str])`: list of brazilian 2 letters state for which data will be imported (if available). Eg: `["SP", "RJ"]`
+    ---
 
-        `months (list[int])`: list of months numbers (1-12) for which data will be imported (if available). Eg: `[1, 12, 6]`
+    Extra:
+    - **Data description**: https://github.com/mymatsubara/datasus-db/blob/main/docs/sih_rd.pdf
+    - **ftp path**: ftp.datasus.gov.br/dissemin/publicos/SIHSUS/200801_/Dados/RD*.dbc
     """
     logging.info(f"⏳ [{MAIN_TABLE}] Starting import...")
 
diff --git a/datasus_db/datasources/sim_do.py b/datasus_db/datasources/sim_do.py
index 4d28cb7..6e1d1f9 100644
--- a/datasus_db/datasources/sim_do.py
+++ b/datasus_db/datasources/sim_do.py
@@ -18,15 +18,19 @@
 
 
 def import_sim_do(db_file="datasus.db", years=["*"], states=["*"]):
-    """
-    Import DO (Declaração de Óbito) from SIM (Sistema de informações de Mortalidade).
+    """Import DO (Declaração de Óbito) from SIM (Sistema de informações de Mortalidade).
 
     Args:
-        `db_file (str)`: path to the duckdb file in which the data will be imported to.
+        db_file (str, optional): path to the duckdb file in which the data will be imported to. Defaults to "datasus.db".
+        years (list, optional): list of years for which data will be imported (if available). Eg: `[2012, 2000, 2010]`. Defaults to ["*"].
+        states (list, optional): list of brazilian 2 letters state for which data will be imported (if available). Eg: `["SP", "RJ"]`. Defaults to ["*"].
 
-        `years (list[int])`: list of years for which data will be imported (if available). Eg: `[2012, 2000, 2010]`
+    ---
 
-        `states (list[str])`: list of brazilian 2 letters state for which data will be imported (if available). Eg: `["SP", "RJ"]`
+    Extra:
+    - **Data description**: https://github.com/mymatsubara/datasus-db/blob/main/docs/sim_do.pdf
+    - **ftp path non preliminary data**: ftp.datasus.gov.br/dissemin/publicos/SIM/CID10/DORES/DO*.dbc
+    - **ftp path preliminary data**: ftp.datasus.gov.br/dissemin/publicos/SIM/PRELIM/DORES/DO*.dbc
     """
     logging.info(f"⏳ [{MAIN_TABLE}] Starting import for non preliminary data...")
     import_from_ftp(
diff --git a/datasus_db/datasus.py b/datasus_db/datasus.py
index 2dbe152..a5fa202 100644
--- a/datasus_db/datasus.py
+++ b/datasus_db/datasus.py
@@ -1,3 +1,7 @@
+"""
+Module with functions used to batch multiple imports from DATASUS's ftp server in parallel 
+"""
+
 from typing import Callable
 import os.path as path
 import duckdb
diff --git a/datasus_db/db.py b/datasus_db/db.py
index 3b8ee69..8d45129 100644
--- a/datasus_db/db.py
+++ b/datasus_db/db.py
@@ -1,3 +1,7 @@
+"""
+Module with common functions used to interact with DuckDB
+"""
+
 import duckdb
 import os.path as path
 import polars as pl
diff --git a/datasus_db/dbf.py b/datasus_db/dbf.py
index 2dbd94f..15402ad 100644
--- a/datasus_db/dbf.py
+++ b/datasus_db/dbf.py
@@ -1,3 +1,6 @@
+"""
+Module with helper functions to handler with *.dbf files
+"""
 import os.path as path
 import polars as pl
 from dbfread import DBF
diff --git a/datasus_db/ftp.py b/datasus_db/ftp.py
index f246c0b..128d152 100644
--- a/datasus_db/ftp.py
+++ b/datasus_db/ftp.py
@@ -1,3 +1,7 @@
+"""
+Module with helper functions to interact with DATASUS ftp server
+"""
+
 import urllib.request as request
 import ftplib
 import logging
@@ -27,7 +31,7 @@ def fetch_dbc_as_df(ftp_path: str) -> pl.DataFrame:
     ) as f:
         f.write(dbc_raw)
 
-    dbc_2_dbf(dbc_file, dbf_file)
+    datasus_dbc.decompress(dbc_file, dbf_file)
 
     df = pl.DataFrame(iter(DBF(dbf_file, encoding="iso-8859-1")))
 
@@ -52,10 +56,6 @@ def try_nlst(pattern: str, ftp: ftplib.FTP):
     return files
 
 
-def dbc_2_dbf(dbc: str, dbf: str):
-    datasus_dbc.decompress(dbc, dbf)
-
-
 def fetch_from_zip(ftp_path: str, files: list[str]):
     response = request.urlopen(ftp_path)
     zip_file = ZipFile(io.BytesIO(response.read()))
diff --git a/datasus_db/pl_utils.py b/datasus_db/pl_utils.py
index c508369..dab657d 100644
--- a/datasus_db/pl_utils.py
+++ b/datasus_db/pl_utils.py
@@ -1,3 +1,7 @@
+"""
+Module with helper functions to work with polars dataframes.
+"""
+
 import polars as pl
 from dataclasses import dataclass
 
diff --git a/datasus_db/utils.py b/datasus_db/utils.py
index 62f5d31..28ea607 100644
--- a/datasus_db/utils.py
+++ b/datasus_db/utils.py
@@ -1,3 +1,5 @@
+"""Module with generic helper functions"""
+
 import itertools
 import os
 
diff --git a/datasus_db/views/__init__.py b/datasus_db/views/__init__.py
index e69de29..70b735b 100644
--- a/datasus_db/views/__init__.py
+++ b/datasus_db/views/__init__.py
@@ -0,0 +1,3 @@
+"""
+Module used to create DuckDB views
+"""