If you're participating in an organized tutorial, most of the preparatory work will have been done in advance by the tutorial instructors. Usually, they will provide you with a separate set of instructions tailored to the arrangements for the particular tutorial you're attending.
In some of the later exercises (starting with Section 4), you will need to build your own copy of (parts of) the tutorial code tree so that you can modify them. Depending on your hardware environment, this may be pretty time consuming. If you're pressed for time you may want to go ahead and start building your own copy of the PDE and then ODE portions of the tutorial code tree before starting the first exercise. Follow the instructions in Appendix F, and you probably want to launch the build in a separate window. The tutorial instructors should be able to tell you whether this ``pre-build'' step is necessary.