If your not using Gmail then start using it.Why? Because this will help specially when registering a AdSense Account so you don't need to Switch email every time.
This is Also Helpful when Creating a Blogger account. Using One E-mail Account will be a Good Start when Starting to make Money Online.
So Here is the
Step By Step Tutorial On How to Register your Google Account.
Step 1: Got to https://www.google.com/accounts/NewAccount
Step 2: Fill Up The Forms Correctly And your Done.
Reminder: Please don't put Some "asdf" or "1234567" in forms to fasten your register.
DON'T BE SO SILLY TO FILL UP. It wont eat you precious Time that bad.
So that's it. We are Done Registering your