docs: Updated README

README.md

@@ -18,6 +18,30 @@ pip install ipfabric
 
 ## Introduction
 
+Please take a look at [API Programmability - Part 1: The Basics](https://ipfabric.io/blog/api-programmability-part-1/)
+for instructions on creating an API token.
+
+Most of the methods and features can be located in [Examples](examples) to show how to use this package. 
+Another great introduction to this package can be found at [API Programmability - Part 2: Python](https://ipfabric.io/blog/api-programmability-python/)
+
+## Authentication
+### Basic
+Please take a look at [basic.py](examples/basic.py) for basic authentication examples
+
+### Environment 
+The easiest way to use this package is with a `.env` file.  You can copy the sample and edit it with your environment variables. 
+
+```commandline
+cp sample.env .env
+```
+
+This contains the following variables which can also be set as environment variables instead of a .env file.
+```
+IPF_URL="https://demo3.ipfabric.io"
+IPF_TOKEN=TOKEN
+IPF_VERIFY=true
+```
+
 ## Development
 
 IPFabric uses poetry for the python packaging module. Install poetry globally: