IMO, the problem with a how-to forum is most of the current forums already are specialized how-to forums. There are many ways to multi-box and it's easier to find information based on the type of multi-boxing you are doing.

Beginner's
Hardware
Software
Macros

Combining all 4 of these forums into one would mean a pretty big lump of information for anyone to sift through, and we all know how many people actually use a "Search" function on a forum.

The beginner's forum pretty much handles all the first time questions (The "WTF OMG wut I do nub" forum) that are fairly common for the community. This information can also be found in various places on the other forums (HW/SW/Macros).

More advanced/typical questions for hardware go into hardware (Testing, Shiny parts, even chairs :P) as someone passes through the beginner's stage and needs more advanced help. Expect to see more computer hardware buffs in this forum (Not necessarily those who use pure hardware setups to multi-box, but tech geeks who can help you with the actual guts of a computer too)

Same for software and then macros.