I started out as an analog engineer in the 70s/80s - finally working in top 24-trk studios by mid-80s. Then I left the biz until 2000 and came back by just buying Protool without learning it first. I was extremely puzzled at first (but this is true of ALL DAWS) as to "where is the recorded track?" I didn't realize that DAWS are like mixers that record, and there is no recording media per se (like tape) - in a DAW everything is recorded to a separate file on a hard drive. In other words, you never assign a channel to a specific track like you do in analog recording (trk 1 for kick, 2 for snare, 24 for bass, etc.) - and if you have having trouble following this idea don't worry, it just means you aren't old enough. I looked at Protools and went "where is the assign matrix?" - Someone in the Digidesign user group (DUC) said "It's just like an SSL, every track goes "direct out" to the number of track/channel number you are using." I hate to say he was quite rude to me, but he was - he said I lied that I had ever worked in studios. Anyway - no need to make a long story longer - but IF you come from analog, that is the biggest difference -that there is no track minimum. There is channel minimum of "live" tracks you can have active at once, but you can have as many recorded "takes" as you want. Its all about recorded files. Other than that simple concept, protools is like analog recording in terms or recording, but in the mixing its a dream come true - copy & paste, time stretching, pitch changing, etc. I was a whiz with razor blades and 1/4" tape, but with PT you don't need it. Also, in PT you HAVE to mix with automation, there is no "live" mixing straight to 2-trk. Every mix change has to be recorded one track at a time, then you just hit "bounce" and it creates your mix with all of your automation moves recorded.