Don't ever start using vi. After you do, any text editor that you are forced to use that doesn't have vi key bindings will give you fits and make you cry. Learning vi is your standard process of enlightenment and elation followed by a lifetime of disappointment. Think about how you'd feel if you ate the best meal of your life at age 13, and the restaurant where you ate it went out of business the next day. You'll be…
Or maybe you'll move on and it isn't that big of a deal.
You have been warned.