As always Pull has great advice!!
I find trainees often have trouble dropping into the snatch per say. What my coach suggests is you do the move, not everyone can drop into the full move, then stand up, then do a front squat or overhead squat as low as you can. This will help train you for it. But again as Pull mentioned, too much focus on the power move can interfere with the full movement.
If you need extra reading, Tommy Kono's book "Weightlifting, Olympic Style" is more or less the Starting Strength book for Olympic Lifting.
Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure.
"When in doubt, just get really, really strong. It tends to cure most problems in training – and life." - Wendler