My adviser asked me to study the first 50 pages of a book so I'm working the exercises. But they are all proofs, so I have no idea if I'm doing them correctly. I can't find any answers online, and even if I did, that would just tell me one way of proving it-- and there are, of course, many. So, my question for more experienced math folks is how do you work on your own doing proofs when you don't have many ways to get feedback? I can bug my adviser a little but he is on vacation! I guess I just don't have a lot of confidence in my proofs yet. They seem good enough for me, but I've often turned in a proof and gotten like 3-pages of notes about the mistakes I made back... so I just know there are mistakes. I need to work on being more careful about technical details. Is it a waste of time to just write out my own proofs if I can't get feedback until fall?