Microsoft has published "The Anti-Virus Defense-in-Depth Guide". A reasonable general introduction, but some inaccuracies have crept in, for example, on page 7, the definition of virus includes, "It may damage hardware, software or date." (my italics). Also, on page 9, rootkits are defined as "collections of software programs that a hacker can use to gain unauthorised remote access", neglecting their more significant role in concealing that a machine as been compromised, and maintaining the attacker's control.
The guide is inconveniently provided as an .MSI file that unpacks to a .PDF: