I am trying to self-study Rudin's Principles of Mathematical Analysis. It worked well for the first 7-8 chapters since there were tons of resources online that gave suggested homework problems, solutions, and hints but now I have reached chapter 9 and the only course website I can find that actually covers those chapters is this one: http://vorpal.math.drexel.edu/course/ia2/index.xhtml There they just give suggested problems but no solutions or hints, so sometimes I have a proof but I am really not sure if it is correct. Does anyone know of another course website that covers chapter 9,10,11 of Rudin? Also, can you give me some suggested problems? I used to just pick problems at random to do but that was a horrible idea since some of the problems are kind of "open-ended" or just really really hard and not really suitable for self-study.