TP1
Unless you are flying for free, shouldn't you ask your instructor? Make him work for his money - flying is expensive and a good instructor would be hapy to point these things out to you. Get your money's worth! These are ideal questions to ask whilst doing your walk round, or during less demanding parts of your lessons. If your instructor is reluctant (or worse, unable) to answer these questions, find another instructor or change schools.
I haven't met an instructor yet who wouldn't help, or welcome such enquiries. Good pilots should always try to understand as much as they can about their aircraft and the environment they operate in, and it is a good sign that you want to ask these questions.
Good luck.