Well the only thing tricky about the weights is on exercises where you don't use any. (Calf raises) The only thing to know is that you can either enter "0" or your bodyweight, but either way you choose you have to keep entering that way. If you have a more specific question...
-------------- And my soul must be iron, because my fear is naked. I'm naked and fearless.
Soooo true Cainsands, also if you use dumbells you can enter the single weight or the combined weight of both dumbells. The key is to be consistent with your entries. Your target reps for each exercise should be to failure, meaning if your rep goal is 8 you should be able to do no more then 9 reps at that weight. Hope this helps you some, the others here at ft will be able to help you out better. BQ