[docs] Update Import keys cleos How-to - 2.0

docs/02_cleos/02_how-to-guides/how-to-import-a-key.md

@@ -1,22 +1,47 @@
-## Goal
+## Overview
 
-Import an key pair
+This how-to guide provides instructions on how to import a private key into the `keosd` default wallet. You can use the private key to authorize transactions in an EOSIO blockchain. 
 
-## Before you begin
+## Before you Begin
 
-* Install the currently supported version of `cleos`
+Make sure you meet the following requirements:
 
-* Understand the following:
-  * What is a public and private key pair
+* Create a default wallet using the `cleos wallet create` command. See the [How to Create a Wallet](../02_how-to-guides/how-to-create-a-wallet.md) section for instructions. 
+* Open and unlock the created wallet.
+* Familiarize with the [`cleos wallet import`](../03_command-reference/wallet/import.md) command.
+* Install the currently supported version of `cleos`.
+[[info | Note]]
+| `cleos` is bundled with the EOSIO software. [Installing EOSIO](../../00_install/index.md) will also install `cleos`.
+* Understand what a [public key](https://developers.eos.io/welcome/latest/glossary/index/#public-key) and [private key](https://developers.eos.io/welcome/latest/glossary/index/#private-key) is.
 
-## Steps
+## Command Reference
 
+See the following reference guide for `cleos` command line usage and related options:
+* [cleos wallet import](../03_command-reference/wallet/import.md) command and its parameters
+
+## Procedure
+
+The following steps show how to import a private key to an existing `keosd` default wallet:
+
+1. Run the following command to import a private key into the default wallet. The command prompts to enter a private key:
 ```sh
 cleos wallet import
 ```
+```console
+private key:
+```
 
-Type your private key. You should see something like this:
+2. Enter the private key and hit Enter. 
+```sh
+***
+```
 
+**Example Output**
+The command confirms that the private key is imported correctly by displaying the corresponding public key:
 ```console
-private key: imported private key for: EOS8FBXJUfbANf3xeDWPoJxnip3Ych9HjzLBr1VaXRQFdkVAxwLE7
+imported private key for: EOS8FBXJUfbANf3xeDWPoJxnip3Ych9HjzLBr1VaXRQFdkVAxwLE7
 ```
+
+## Summary
+
+By following these instructions, you are able to import a private key to the default wallet.