Hi, welcome to the forum! Youtube has a ton of tutorials on screen printing, one that's good is catspit productions. Silkscreeningsupplies.com also has some good instructional videos that you can purchase that will take you through the entire process of screen printing from artwork to clean up after the printing is done. "Screen Printing 101" is what I recommend. On the left of this screen are suppliers of printing screens, machines, inks, chemicals needed for printing and clean-up, and clothing to print on.