Thanks guys! All of this will be really helpful. I was hoping Amplitude will be enough for me to record. I think it has 4 tracks? That should be enough. All I would be doing is rhythm, lead, and drums. I don't think I would ever use more than 4 tracks for one video.

But I did notice the Alesis iO2 (which I just ordered) says this: "The Alesis iO2 EXPRESS comes complete with a copy of Steinberg Cubase LE digital audio workstation (DAW) software. Cubase is one of the most popular DAWs in the world thanks to its intuitive approach to composing, recording, editing, and mixing. In addition to the included software, the Alesis iO2 EXPRESS is compatible with virtually all audio and MIDI software."

So that would be everything I would need, right?