Silk Screen printing or truly called Serigraphy is one type of surface printing that has been around awhile. Silk is stretched tightly on a wooden frame. A picture is applied to the silk by paper stencil or chemical stencil. Paint is then forced through the silk (blocked by the stencil) on to a sheet of paper or T-shirt.
you would have to be a degree seeking student... not just in a certificate program or just taking a few classes in order to use FAFSA generated funds (including Pell Grant)
You would have to find a school with an Art Degree that also has classes in silk screen printing
Another option (if you are in the US) is to get with Voc Rehab & see if they can help you find on-the-job training