I'll give you a quick rundown.......but I highly suggest doing a search on Youtube for RYONET screen printing how to
1. Buy a frame (which has screen streched on it already) $20
2. Spread emulsion on said frame
3. Create image and print on transparrent film
4. Burn image onto screen
5. Wash image out the screen
6. Put on ink, spread over t-shirt
7. Cure using heat gun or flash dryer.
Seriously it would take 2 hours to type out each step. Just do the youtube serach. here is a good one.....
YouTube - Screen Printing overview