Practice?

[Alkatran]

Where can I find some good problems involving finding proofs? I want to see how far I can go as it's relatively new to me...

[phoenixthoth]

I recommend "How to Prove It" by Velleman:

http://www.amazon.com/exec/obidos/tg/detail/-/0521446635/qid=1095123567/sr=1-1/ref=sr_1_1/102-0468743-9627305?v=glance&s=books

[Alkatran]

Nice, but I was looking for a free ressource. I'm in no rush to learn it, as I probably won't run into it this year in university.

[Gokul43201]

There are some interesting problems here : http://perplexus.info/category/14/

[matt grime]

I would strongly recommend NOT buying Vellman, it's a stinking pile of poo, that just serves to retard the development of people's ability to actually prove anything. And I'm speaking from experience of teaching people who've worked from that book and are under the impression that to prove some statement such as if x is even x^2 is even it is sufficient to draw a sodding truth table.