I love spending time on argo, but you might have to wait till after level 8 to find people who have a clue or run with some TR's. Had some really bad experiences with Tempest Spine PuG's, but other than that all higher level content I ran people were friendly, helpful, and forgiving if you did something stupid because you were new.
On the other hand I've been kicked because I didn't know where a walk-up in GH was my first time out there...so not everybody is full of rainbows and sunshine.
And I can't say I've ever been in a bad Shroud PuG in Argo...if that helps
Just stay away from the trolls at low levels, all the TR's I ran with were very friendly and helpful.