Actually if you are producing videos that's a whole different ball of wax from what I usually do.
I lay down multiple tracks one at a time with a mIdi sequencing program like Cakewalk. I usually start with drums then bassline then rhythm then lead but everyone has their own style.
Recording in MIDI format also allows you to edit note by note to get rid of any accidentals and whatnot.
My final audio recording is a computer soundcard recording of a MIDI playback of all the tracks together.
At least that's what I find easiest.
Recording multitrack audio is definitely not the most forgiving medium for recording and edits are difficult if not impossible.
Editing multitrack audio for video is even tougher, especially if you start syncing up multiple splitscreens with your sound tracks.
Anyway, if you really want to get into orchestration and home recording a good place to ask is over at this board.
http://homerecording.com/bbs/
To give you an idea of how I do it, take a look at these youtubes.
There are plenty of good sequencing DAWs out there so look around and search them out on youtube to learn how to use them and which ones you'd like best.
Gary