Michael,
I don't know if you have seen the tutorials from RogersAccessLibrary or not, but I have found them very helpful. They deal specifically with business facts and a process to identify and test tables, attributes and relationships. I recommend you work through 1 or 2 of the Rogers tutorials mentioned in this Planning and Design link (also in my signature), then apply what you have learned/experienced with your own situation. Most problems with database can be traced to design/structure issues. So getting your design aligned with your business requirements and adhering to database concepts is key, and is best done before getting too deeply into physical database(Access, Oracle...). In my view you are not ready for forms or tabs etc; you are still asking questions re tables/attributes. Get a tested/vetted data model as a blueprint before jumping into Access with both feet.
There are several other articles in that link that may be helpful to you.
Good luck with your project.