odds for limit holdem

Im having trouble trying to figure out odds for my hands in limit holdem like should i call this bet and things like that and also odds of making my hand could someone please tell me a easy way to calculate this stuff and also how to do it quickly as you dont have alot of time to act on your hand thanks guys

always have this page up in the background for quick reference, or get a mouse mat with them on!
Im sure ive seen them around
Alternativly learn them!

http://www.flopturnriver.com/start_pot_odds.html

Quick and easy rule of thumb is count outs and multiply by 2 for percentage to hit an out on next card and multiply by four for percentage to hit by the river (from the flop).

E.g. You hold and flop is :Qs:

You have 9 outs for the flush (I'm disregarding the fact that those outs might not be good at the moment). So you have about an 18% shot to hit a spade on the turn (about 1 in 5). And about a 36% shot to hit a spade by the river (about 1 in 3).