Alan,I think that you need to start with the WinForms tutorial. By starting straight on the web you do not yet have an understanding of how to create a business object, map it, etc. First of all, you NEVER want to store a BO in a web site project. You need to create a BO Library project and then the web site references that project assembly.
If you start with the WinForms tutorial, you will see how to create BOs, map them, bind them to controls, etc. Those exact same BOs that are used in the WinForms can then be turned around and used on a WebForms application without changing a single thing from the BO layer down. Another reason to create a BO library.
I hope this makes sense, but I think you would find more success by first starting on the WinForms side where, per our converstaion earlier, you have more experience anyway and things will probably line up more quickly as to how the framework is laid out and works.