Malcom4819 hit it on the dot.
But, for starters, definitely kick it off with the mercer tees and u necks. i wear my JE tee's on the daily. It's sad, i own like 25 JE tees, but always reach for the black SS mercer or grey LS mercers. Those colors will get you a ton of wear, without the worry that whites give you. I posted it a few days ago, but I've worn those 2 tees on the daily for almost half a year, and despite the rough wear and frequenty washing, they've held up very strong. no loose threads, no stretching, etc.
well worth it.