1. Go to your "My PrepPacks" page and find the PrepPack you would like to practice with.

2. Click on the PrepPack and proceed to the "Tests & Guides" tab.

3. Click on the section you would like to begin. A drop-down menu will appear with all the practice drills for that section. 

4. Click on "Start" to the right of the name of the practice drill. 

5. You can then select Step-by-Step Mode, which includes an explanation for each question, or Timed Mode, which emulates the time constraints of the actual exam.