Domain Mapping and Multi-Domains Installation and Configuration Instructions/Tutorial

I've noticed that a sizable percentage of users tend to encounter some difficulty when installing/configuring Domain Mapping and Multi-Domains. I went ahead and created a tutorial/set of instructions for installing and configuring both of these plugins (including some basic instructions for configuring the necessary DNS settings). For future reference, here is the pertinent link:

(Using this link instead of the direct link to the post/page makes it easier to update the location of the post/page in the future [e.g., if I get around to creating a tutorial post type with CustomPress, which would change the URL slug].)