Here at UMDNJ, a limited collection of such files and documents are archived at the UMDNJ Remote Access archive. At digex.net, you can find information on Internet Access Using SLIP or PPP, and at Yale University, you can find the PC Lube & Tune Exit Ramp.
TheWindows and TCP/IP for Internet Access web page is maintained at the University of Vermont, while you can find a comprehensive Glossary of Internet Terms at matisse.net. Additionally, the Internet Documentation (RFC's, FYI's, etc.) defines the foundations of the Internet and its bleeding edges.
There are several Usenet news groups related to Remote Access. Representative of these are the comp.protocols.tcp-ip newsgroup, the comp.protocols.tcp-ip.ibmpc newsgroup, and the alt.winsock newsgroup.
A frequent and integral consequence of active newsgroups are Frequently Asked Questions lists. These lists are required reading if you want to stay on top of this material. For example, if you are interested in PPP, you will want to read the comp.protocols.ppp FAQ list. Similarly, the Winsock Application FAQ is essential reading for users of Winsock applications. A quicky guide to Very Useful Stuff is found at comp.protocols.tcp-ip.ibmpc Frequently Asked Questions (FAQ), part 2. A more narrowly defined site at the NCSA provides all you'll want to know about NCSA PC Telnet.
Mail lists, or so called listservs, also provide ongoing current information, and often the mail and related files are archived, such as at the Winsock-L Home Page.
As you might imagine, there is an enormous amount of information available on Windows Sockets applications, as can be seen at The Consummate Winsock Apps List, the Winsock Applications and Resources, and the eznet winsock directory.