[Buz]

Here's some easy help for you: go buy Bill Burton's book "Getting the Edge in Low Limit Texas Hold'em". His chapter on pot odds is very good if you don't want to do math and he includes a simple odds chart that shows for x outs you need xx in the pot in order to call. Just knowing the important ones, like 4 outs (inside straight) 9 outs (Flush), etc. can help you make a lot of those decisions.

Over the long term, everybody gets the same cards, so making the right decisions is key to being a winning player. Interestingly, if the decisions are really close - then they don't really matter, you'll break even. So, your math doesn't need to be real precise.