Personally, my best tip would be not to buy from rockstar's social club. Buy it from steam, even if it costs more. Way less of a pain in the ass. I got A LOT of trouble with their standalone gta v.
On another note, I'd say it's one of the best games in its genre, which is like "open world madness". This and Just Cause 3 are both excellent with this. It's also quite nice to do some heists with friends.
I personally recommend it.