Agree with the others... start with the foundations of olympic lifting - the snatch and the clean.
You can choose between the full version (catch bar in bottom of squat position) or you can do the the power version in which you catch the bar anywhere above parallel in relation to a squat. It truly doesn't matter which you choose because if your doing the lifts correctly, technique between the two variations will be same with the only difference being where your body is when you catch the bar.
Aside from full/power variations, I also suggest you spent most of your practice/oly-training doing hang variations... at least for now. Many may disagree but the snatch or clean from the hang is excellent in teaching correct technique and hip drive. With those new to the o-lifts, people will rely on the first pull -- the pull off the ground -- to really get the bar moving up, this isn't bad in the context of moving weight, BUT when weight gets heavy, that speed off the ground will slow and the lift won't be made.
Cleans and snatches from the hang will really teach your how to get your hips involved in the lift and set in stone the second pull which is often the most difficult.