I'm a graduate student studying at home. I find that ressources in Mathematics on the web are easier and easier to find, and I am happy for that, because I like to have different points of view about the same subject. I find that projects like StackExchange, MO and Arxiv are wonderful for every home student (and other ones too), even if the level to understand the mathematics is quite far from mine ;)
However, I would like to ask if there are some wonderful pdf specially in the domain of Algebra (group theory, rings theory, modules, commuatative algebra,...), and by that, I mean not just academic books that present the theory, but books that present theory in regard of history and present where came the definitions and theorems.
Thank you for your time :)
P.S. This post was at the origin posted at http://mathoverflow.net/questions/117645/about-studying-at-home-finding-good-pdf but was not in his place.