They do not have private matches yet...hoping that comes soon...What we like to do is throw the new guy/gal on the other team and take turns stabbing him/her. Much fun for all....except said victim.
It has been brought up about using a squad rush game to train. We haven't done that yet as finding 8 peeps on at the same time is still a bit hard.
What works best is getting in a squad with someone (4GC) and following them around to learn the maps/spots/etc. Like I said to ER in another topic, start out as med or support and throw bags of drugs or ammo out. If you go med, once you unlock the defib paddles, use those.