Play the game with people... You learn a lot faster... Also make sure you are listening to the people you play with and ask what you are doing... People are going to be jerks but just play and learn.
If you don't know how to contain yi before he gets the ability to kill everything in 2 seconds you seriously need to re consider your play style. Yi is pretty much the exact same as eve, except instead of buying an oracles you A) don't stand still, or B) use one fucking CC spell.