[docs] Update Import keys cleos How-to

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

@@ -1,21 +1,41 @@
 ## Goal
 
-Import an key pair
+Import a private key into a wallet
 
-## 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 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](https://developers.eos.io/welcome/latest/glossary/index/#public-key) and [private](https://developers.eos.io/welcome/latest/glossary/index/#private-key) key pair is.
 
 ## Steps
 
+Perform the following steps:
+
+1. Run the following command to import a private key into an existing wallet:
 ```sh
 cleos wallet import
 ```
 
-Type your private key. You should see something like this:
+2. Enter your private key. 
+```console
+cleos wallet import
+private key:
+```
+
+**Example Output**
+
+The following example confirms that the private key is imported for the corresponding public key. 
 
 ```console
 private key: imported private key for: EOS8FBXJUfbANf3xeDWPoJxnip3Ych9HjzLBr1VaXRQFdkVAxwLE7