Available at: http://pages.cs.wisc.edu/~remzi/OSTEP/
Note: you can use the free online version, or pay $10 for a complete .pdf with glossary, links, etc. Also you may choose the hardcopy options for $22 softcover or $38 hardcover. Any of these options include all of the material needed for the course, just choose the most convenient for your needs.
Please be sure you check mail to your .pdx.edu account. The instructor may send out announcements using this. It is also added to a google list intended for student discussion.
You will need a CS account and badge access to the CS Linux Labs.
You will need to learn to use an editor such as VIM or emacs on the Linux Lab machines.
You will need to program and understand C.
See The Laboratory Tutorial in Appendix F