Been using it for years. Great software as long as you don’t forget that its a production tool. Not a DAW. You’ll get frustrated with its lack of editing tools really quick if you expect it to do what Reaper and PT do. But its workflow is one of a kind…they actually ripped the looping grid concept off of Yamaha, but they’ve adapted it into a one-of-a-kind DAW. It tweaks, warps, and modifies sounds like no other, but its just sucky at cutting, chopping, editing in the way you’re used to. I only use it as a production tool. Mainly for songwriting sessions, where I have to blast out 10 million concepts per minute or throw stuff into a computer before some else forgets what they just sang lol.
Its real rival isn’t PT, Nuendo, or Logic in my opinion. Its actual competitor is NI Maschine.
I learned a lot through the Groove3 training videos. How old is your son, and how tech savvy is he?