Anyone have experience with the Fertility Awareness Method?

So, in my goal to get away from hormonal birth control, I've been reading about the Fertility Awareness Method (taking your temperature to track your cycle). I'm wondering if anyone's used this before? I've always had side effects with my birth control pills, and the chance of problems with other methods also makes me uneasy.

So, is it worth it? Do you like it?

Help!