Go for it. I've been reading stuff here for years. Finally bought some translucent buttons months ago, and some LED's. Got some trackballs more recently, then some wire, hacked a mouse.... It all takes time, esp if, like many, you've got a wife and kids and maybe not a lot of cash to spend too quickly. The book is fairly good, some of it is getting old, but there's a lot of good info, and some good cabinet plans.
Wiring, woodwork, etc are all easy enough - just keep reading, lots of good tips on this site.
Good luck