I WOULD LIKE TO KNOW

Say ive got a nut flush draw,which is 9 outs,which equals 35% of hitting my hand,does that mean i dont put in more than 35% of my stack to hit,ive read about the 4 and 2 method but still dont fully understand it,i know you times the outs by 4 then by 2,i would be grateful if somebody would help me out on this matter.

http://www.cardschat.com/odds-for-dummies.php
That might help you out on understanding outs and odds.

It depends whats in the pot! 35% chance of hitting means you're about a 3/1 underdog (although the 'nut' flush implies overcards - could be a higher chance than you think).
So there needs to be 3 chips in the pot for every one you put in. If the pot stands at $400 and its costing you $100 to call the bet, you're getting 4/1 on your money and well priced in. If there is $200 in the pot and its costing you $100 to call, you're priced out.
(hope thats right, I'm still getting to grips with pot odds. 35% could mean 2/1 - I have mixed it up a couple of times!)

Its not as cut and dried as that of course, you need to have a vague idea of what hand you're betting into/calling off.

Its not about 35 percent of your stack, its about not putting in 35 percent of the pot more

once you learn this, from the link, make sure you check out implied odds.

The Link didnt post,please re-post it

Simple. Mulitply your outs by 4 on the turn, by two on the river. That gives you the percentage of your hand HITTING, not necessarily winning though. Hitting a nut flush is a winner of course, assuming there is no possiblity of 4 of a kind or a straight flush.

You could also have the better hand if you hit a pair if you have overcards. In this case if you also had two over cards, your outs would be 9 plus 2 plus 2, or 13 outs to hit the hand. This has no relationship to betting, only to the odds of winning.

The other idea is the odds of winning the pot verses the amount you need to bet to stay in. I do not bet draws, but will sometimes call with them if I have overcards. I often call a min bet with a nut flush draw and overcards. The question you have to ask is how much is in the pot when you make your decision. If your odds are 1 out of 3 to hit the nut flush, and the pot has $80 in it, and it costs you $20 to call, then you do so. Ir you make the play 3 times, you will win once, lose twice. Since over the three hands at $20 each you would bet $60 and win $80, you would be $20 ahead if the odds hold.

you can only multiply by 4 on the flop if you expect to see both streets. Otherwise you can only multiply by 2, giving you the immediate odds of hitting on the turn.

also, betting draws = +$EV, especially something like a flush draw where your implied odds are less should you actually hit.