When I open my area of focus "A" folder, should I have projects in there or reference material or both? How do I phrase a goal so it is not a project or responsibility, and are goals above aofs or under?

Does gtd encourage ideas to go into someday/maybe, or their own list? Or reference? Example, i thought of a nice color scheme for a room. Reference list? Action list? Off of that, does anyone else leave reference items in a context list to act like a location based ticker? Eg, i am at computer and i see a note in @computer that says keyboard shortcuts for a new program. I would have forgotten to use them if they were in reference.

OK that's enough. I really appreciate the help here, it is revolutionary for my work.