I've always had an interest in this hobby, but only got into it seriously in the last year, with the majority of upgrades in the last few months.
I've learned a great deal just from reading posts on boards like this and used it to research my gear before purchasing. Actually hooking up all the wiring was never all that complicated to me, as I've messed around with crappy receivers and speakers for years; but learing how to use a SPL meter, calibrating sound and video, and phrases and terms such as " bright", "forward sounding", "excursion" and "macroblocking" were really lost on me when I started this. I've learned a great deal about how my equipment interacts with the room. I'd never really listened to how music sounded in different parts of the room before, particularly bass, and how placement has such a big role in sound.
I have to send a big thanks to the moderators on this board and all the people who've responed to all my noob questions. You've helped me learn a lot! I'm no expert, but I can now set it up from start to finish and tweak it here and there!