That's a great guide, thanks for pointing it out.
Okay, here's what I want to do. Apologies if my terminology is incorrect.
1. how many channels you need
It's all me, so no more than two at a time. I mostly play guitar and sing, and it would be nice to be able to record both to separate tracks. I'll add drums (some live via a Yamaha DD-55, some canned via software) and bass (just the guitar with the tone turned waaay down), and then lead guitar. So again, if I understand you correctly, I need two channels - one mic, one guitar.
It'd be great to spend about $100. If that's unrealistic, I'll keep it as close to that as I can. So far I've been recording to a line-in jack on an IBM Thinkpad, and recording audio via a very poor quality microphone, so anything will be an improvement. Actually, what would be GREAT is something I can use on my Thinkpad now and my Mac later (see below). If that's not doable, oh well.
3. what software you'll be using
Once I get a Mac (thinking of waiting until September 12, per advice in these forums), I'd use GarageBand. Right now I'm using Magix Music Maker Deluxe 2005, which crashes a bit more often than I'd like and just isn't as user-friendly as GarageBand.
One more thing that I'd like to be able to do that I don't seem able to do at the moment is monitor my input while recording. For example, when I play the Yamaha drum machine, I can listen to what I've already recorded via headphones, but I can't hear the drums at all. Same with a guitar, bass, vocals, etc. - I can sing/play along with the tracks I've recorded so far, but I can't monitor what I'm currently playing (hopefully that makes sense). Not sure if this is a hardware or software limitation.
The last part of this is which Mac to buy. Can a low-end Macbook (the current $1099 model) handle two channel recording?
Thanks in advance. This is making "switching" much easier.