Tim, A good section to add to http://rfactor.net/web/rf2/rf2help/ would be "Understanding the Configure Sim Options". I (probably like most people) don't really understand the differences between FXAA and Anti Aliasing Levels and why I see different Sync and Refresh Rate options. It would be nice for use users (and even older users) to have a definitive place on the ISI help/support site where a quick summary of the options and the things they affect and change would be useful. The same information could probably be found in the forums but as it is one of the first things a new user comes across it would be good to have a section they can read to understand the options.
