How do I get GNOME from CVS?

CVS is a very useful tool, not only for developers, but for users who want to have up-to-the-second access to the development tree. However, using CVS is a little involved for this section of the FAQ. Two good places to start are the "What is CVS?" section of the website at http://www.gnome.org/devel/whatiscvs.shtml, and the Becoming a GNOMEr section below.