Introductory Real Analysis by Kolmogorov and Fomin is the most advanced of any text mentioned, so this is probably not a good place to start. There are two chapters discussing metric spaces and topological spaces, and then about 3 or 4 chapters on functional analysis, and finally three chapters on measure theory and integration. Even if you could follow many of the arguments in the text, you would still be missing out on a lot of basic real analysis, which is more elementary but fundamental. You won't get very far in Kolmogorov and Fomin if you're not well-versed in epsilon-delta arguments.
If you want a cheap intro analysis text that is fairly excellent, I would recommend Maxwell Rosenlicht's Introduction to Analysis. This text is very easy to read, and is probably a good supplement to a more comprehensive text such as Apostol's analysis text. It starts with the axioms of the real numbers and culminates with a discussion of analysis in R^n. Since you can get the Dover copy for like 10 bucks, it's also a good deal.