This step-by-step tutorial assumes that you have already installed Git Extensions on your computer.
Using GitHub via HTTPS with Git Extensions can become pretty boring. SSH to the rescue.
Step 1: Click on Tools -> Generate or Import Key
Step 2: Click on Generate
Note: Move the mouse over the blank area to generate randomness when generating the SSH key
Step 3: Click on Save Private Key
Note: Click Yes for the passphrase message
Step 4: Save the SSH Private key with .ppk extension
Step 5: Copy the SSH Key to the clipboard
Step 6: Setup the SSH key with GitHub Settings