I really like maths, and I really like doing mathematical problems.I have learnt pretty much everything I need to know for the next year of the school syllabus already by just reading up on stuff that interested me i.e. calculus, complex analysis etc. but that's all about solving stuff and finding things. What I really want to do is proofs but I don't know anythings which I don't either already know and understand a proof off or is too simple it isn't challenging to prove i.e. 1*0=0 or is too hard and out of my league for the moment i.e. Fermat's little theorem [although that is pretty high up! it is just very difficult to think of an example] So the question is really if anyone can recommend an entry level place to find proof problems?