Could be handy as a quick reference guide, but at the same time might not cover the detail if you have a specific question, and everything will definitely be in the manual.
You'd probably be better off creating your own "Key Facts" notes, as the act of doing this will really make you think about the syllabus, what's important, and in your note taking you will take a lot of the information in and get used to the references you are using. I learn best using this study method, but I guess it's a personal thing that doesn't work for everyone. Some people seem to read something once and know it forever.