You did not ask this, but it may come up soon and backwoods alluded to it.
In Preferences, you will really want to think about how you set things under Record.
For example, I personally always want Overwrite on when recording vocals because I like to be able to punch in. If I want a new take, I go to a new track. Other people prefer multiple takes on different lanes instead of punching in.
For MIDI, on the other hand, I use Sound on Sound, because I typically want to keep adding parts (like drum parts) without erasing what I have. Similarly, I may record the first verse on bass, back the song up to the middle of the verse, hit record, and start playing when I get to the second verse or chorus--but I don't want to erase what I already did just because I backed up a little too far. If I don't like a take, I UNDO or DELETE.
Your style may be different but if you are not aware of the choices in Preferences, you might get a bit flustered.
Best of luck.