Also practice Woolly Boogie, which is easier than it looks. Review the Chromatic scales (# 1 and 2 at the top of Pg 52) to help find the notes. Also, practice the chords for this 12 bar blues song. Slow recording of Woolly Boogie, Box chart and recording for 12 bar blues on Resources page.
Do exercises 3-6 on page 53, to identify the major and minor 3rds. Review #1 and 2 on that page before you start.