I am wanting to get my Oregon landscapers All phase license. I know what the state requires and all of that. What I need is help with study materials. Do I need to know the entire Chapter 671 of the ORS and also the entire chapter 808 of the OAR's or is there certain sections that are more important? How do I get a copy of just what I need of the Oregon plumbers code? What books will help with the rest of the test? Anyone with some ideas or that have taken the Oregon test that can help please do.