as far as using emulsion for bulk orders only, i would say that's really from the viewpoint of person who has a lot of money invested and equipment purchased. Sure, if you have like four printing presses and thousands of dollars in other equipment, then it doesn't make much sense to print single shirt orders. If you have just a simple one color, one station press then it should be fine.
As far as heat transfer goes, i don't know too much about it. You could try purchasing books or DVDs for instruction on how it works. I do know that you would need a special computer printer, and heat transfer paper. Also you will need a heat transfer press. Check out some of this stuff.
Heat Press, Heat Transfer Press, Heat Press Machine, Used Heat Press, T Shirt Heat Press
Sublimation Transfers, Sublimation Kits, Sublimation Printer
hope this gives you some insight as to what you want to do!
As far as heat transfer goes, i don't know too much about it. You could try purchasing books or DVDs for instruction on how it works. I do know that you would need a special computer printer, and heat transfer paper. Also you will need a heat transfer press. Check out some of this stuff.
Heat Press, Heat Transfer Press, Heat Press Machine, Used Heat Press, T Shirt Heat Press
Sublimation Transfers, Sublimation Kits, Sublimation Printer
hope this gives you some insight as to what you want to do!