What kind of information would you need to know. I don't think it would need to be done any differently than regular cotton t-shirts.
This thread in the wholesale t-shirts section of the forum might give you some good leads: http://www.t-shirtforums.com/wholesale-t-shirts/t36258.html
Usually, finer quality t-shirts are screen printed. Sometimes using waterbased inks or discharge inks.
Some very fine, upscale t-shirts to use would be bamboo t-shirts (like a bambooclothes.com) or places like bareapparel.com