I cannot stress the importance of precisions. This means being able to precision to heights that are higher than you to those lower. And when you feel ready move to further distances as well.
I want to just insert here that this thread was specified for a beginner. I don't feel that beginners should be jumping off of anything 'over their height', no matter where they're landing.
thankyou this helped alout only i had all ready learned precisions but lazy vault think you
I don't think anyone ever "learns" precisions, not even the greats. Just because Sebastian Foucan can make a crazy precision to a rickety, slanted, slippery railing, doesn't mean that he stops practicing them. Every day, there's something more to teach yourself. If you can precision a certain distance, practice landing as silently as possible. Then make the distance further, or take off sideways, or backwards, or from one foot. Learn control.

Lazy vaults are great. There are two basic take-offs for the lazy that are good to learn. 1) you take off by swinging your inside leg upwards and over, followed by your outside leg. 2) you swing your outside leg over first, and sneak in your inside leg by "figure four-ing" it underneath the first leg. Hard to describe, look for youtube vids to help explain. Also! Try learning them going both directions, relying on both arms. It's good to be ambidextrous.
I'd also suggest learning basic underbars. You can set up a training spot at a local playground by using the monkeybars and some tape. take the tape and stretch it across the support pillars from one side to the next, lengthwise. You grab the side of the monkeybars, and swing yourself over the tape. You can start with the tape low, and the raise it higher as your technique gets better.
Good luck, and happy training!