This thread is a good place to start.
But I s'pose, as a quick tutorial, I think hotkeys are the way to go, as there are some that give you a lot of the functionality you need. So for starters, you're adding the frets on the tab notation, so my editing process usually includes the following:
g - Adds "guitar in" which otherwise will not play a piece without this.
(The red guitar tool bar icon allows you to add additional instruments, adjust the tuning/capo, number of strings, etc.)
o - add tempo
shift t - Adjust Time signature as needed.
shift up/down - Adjust duration of individual notes as needed, one interval at a time.
shift left/right - Toggle on/off adding dotted/double dotted notes.
f - Add bar line.
shift r - Add rehearsal signs.
d - add dynamics.
shift d - add musical directions (D.C al coda, etc) If you want a musical direction to occur the 2nd time only of a repeat, make sure you select "repeat # 2" at the bottom of the box.
y - tie notes.
v/w - vibrato/wide vibrato.
F2/F3 - Toggle between guitar/bass scores.
F11 - Score checker.
z - Toggle staccato.
c - Add chord name.
k (at a bar line) - add key signature.
Extras which may be handy, though I don't generally use:
F5 - Play
F6 - Pause
F8 - Stop.
That gets me most of what I need. You can also click, in the STAFF notation, the barline to adjust the type of bar it is, say from a regular to a repeat bar line. Plus, from the tool bar on top, there are options to do volume swells, fade in/out, add staffs/multiple staffed sections (max 3).
Control c/v only allows you to copy/paste one instance, and then the program takes a dump on you (but doesn't crash).
... That should just about do it for an intro course. Please ask if you need anything else, and happy tabbing!