Is gaming on pc easy?

I going to be getting my pc soon as well as WoW and I was wondering how many keyboard commands there are and how long it takes to memorize them and use them effectively. Also I was wondering if it's easy to play WoW when you can't type very well without looking could I maybe just take a glance for half a second to locate the key. Finally dies anyone have some free software to train you to use all keys without looking or do you have your own exercises?