I graduated from college this summer and I have some time on my hands right now. I decided to start working through one of my old books from a class I dropped, Real Analysis. Anyway I really miss the challenge that class posed for me and so I am trying to work my way through the book, "Introduction to Analysis" by Edward Gaughan. I'm wondering if anyone knows of any places online that professors who may have used this book have left their notes online. Generally any place where I could get some help understanding some of the deeper concepts in the book. I'm thinking that someday down the road I'd like to go back and get my Masters in math, but until then I'd like to prevent things from getting hazy in my mind. I can already feel Calc II and III stuff getting fuzzy. I appreciate any help. Thanks in advance.