Part1: Tanio Ink shows us how he separates CMYK using Adobe Photoshop, he shares useful tips to obtain halftone value using a simple formula, and other screen printing advice. He works with t-shirts but this advice will work for printing onto other fabrics and surfaces! 

Part 2: next video shows registration and printing...

Times
00:47  Opening design in photoshop
01:20  Converting image into CMYK
01:51  Opening a new file (make sure this is in grey scale)
02:25  Halftone 
02:40  Frequency - Mesh Counts  These should be tested to suit your work:
              Try 60-46 for paper screens or high detail on textiles screens
              Try 40-22 for textiles and or heavier prints/surfaces
              He uses American measurements in this video.
03:08  Angles
               C: 15    M: 75    Y:0    B:45 
07:17  Print outs (we use paper not film)
               Mark each film and notice the registration marks he uses to help line up the screens