Replying to Making Shirts

So I wanted to look into making my own shirts because most of the stuff I find I don't like. I more or less have no clue what the hell to do haha, I know silk screen works well and I wanted to look into that. Also where could I buy a lot of nice fitting large T0shirts in bulk? Any idea how much it would cost to make a silk screen thing and how much shirts would cost and colors and all that stuff. Basically just looking for a lot of input, maybe some site links, thanks a ton in advance everyone.