If you are setting out to learn limit hold'em you'll want to be conservative. If you are trying to become a master at limit hold'em, you'll want to be conservative.
The best thing and the worst thing about limit poker is that NO ONE FOLDS! Well, that's an exaggeration, but at most tables you can not expect to take many hands without a showdown.
In limit, usually the most important decision you make is whether to see the flop. Most of the time the answer should be NO. The best poker player doesn't win the most hands; usually the worst one does. The best player makes the most money possible when winning and loses the least money possible when losing.
Ok, duh. You're probably thinking that this is a bunch of obvious crap and if you are clever maybe you are thinking that this is just content to help with search engine placement so more people can come here and take the links to the real poker websites. Well, your right. But since you've read this much I'll give you a real poker tip for limit hold'em.
There are only three states when it is your turn to act.
1. You have a positive expected return on this bet.
2. You have a negative expected return on this bet, but you have pot odds.
3. Negative expected return and no pot odds.
Case 1: Raise.
Case 2: Call.
Case 3: Fold.
Sounds simplistic but in practice people call way way way too much. Early in the hand when pot odds aren't a big factor you should almost always raise or fold. Because this is a limit hand I'm talking about you will rarely be in a situation where you will call on a slow play. Slow plays are usually just throwing money away in limit.
In case you don't know what pot odds are; they are the following "I had two good cards and the flop looked good so I was there for some raises and the pot got kinda big. My hand stopped looking so good but I still have a couple of good outs and the betting cooled down anyway."
Good luck.