Can You Share Your Knowledge about Thinking about Math problem and the resources that you Study from it ?

Let's see if I can do that in one day Next Century ! (I'll come back when I finish this achievement (: !!

Hello, my friends.. I would like to take your opinion on my training method.. I set a specific time for the problem, and if that time ends, I see the solution.. I put 30 minutes, and if I don't find a solution, I see the solutions of the contestants.. Is this method effective.. or Not..!! I would like to hear how each one of you trains!! And thank you very much my friends !!

can someone tell me how can I change my Profile name.