I would read the series by Staley about snatching, then the snatch article by Thibs.
Staley wrote about the snatch grip jump drill, where you hold the bar wide as in the snatch and jump for height with it, while shrugging it at the top. You can sort of feel how the bar would fly up over your head if you let your elbows “soften”.
Basically, I would reccomend playing with the empty oly bar until you feel comfortable with sticking some weight on it. Probably the best thing for my technique on the oly lifts has been flipping railroad ties end for end. Because of the way you grip it underneath it to lift it off the ground, you have to change your grip to push it over. If you do this by pulling it up and then “popping” underneath it at chest level, I feel like it teaches how to catch the weight in snatches and cleans. For me anyway…
Don’t forget the triple extension either, ankles, knees and hips. If I get the ankle extension, I feel like the other two follow suit.
Just my observations, I’m by no means an oly lift expert. I’m kind of in the same boat, self taught on the oly lifts, stay light until you feel comfident then grease that groove.
Solid advice here from Conor. I would also go to Dan John’s website
Heaps of stuff on there to help you out. Also, try getting hold of Dan on prime time. I’ve been doing them myself for only the past month or so and going light at the start and working on technique is the key. That way if you “lose” the bar it won’t cause much damage if dropped or you might be able to recover before you do drop it! The jump snatch drill is very valuable to help get the feel of how you should shrug the weight up. Do it a few times and then try softening the elobows, it should fly up over your head.
Also, work on overhead squats to get your shoulder flexibility and balance in order.