Reading: The first few chapter should be mostly review. You can skim through most of this material, though you should read 5 Variables (starting on page 51) closely if you've worked with a language other than Java.
Work through 3 Draw (p. 21), 4 Color (p. 39), 13 Image1 (p. 163).
Sketches: 3-31, 3-34, 3-43, 4-04, 4-07, 4-18, 4-09, 13-04, 13-06 Post the output (that is, a screenshot) of your sketches on the Class Wiki page. The How To page describes how to do this.
Use your own images for the Chapter 13 sketches. Add them to the sketch using the menu choice
Sketch → Add File…