Where can I find a good book or website to help me count my calorie intake?

I don't eat alot but am afraid of taking in to many calories per day and nnot being able to burn them off at the gym. Where can I get good information on how many calories in different foods?

We greatly appreciate your interest in helping us build our Q&A database. To discourage vandals from posting garbage, however, we require people to register before posting.