Pretty simple one, how about a users manual.
For those unfamiliar with these, Revit developers take note, they are pages of paper bound at the side and describe how to use the product.
They come in various sizes and colours and are very useful to beginners.
But seriously, nothing beats sitting down and flipping through a book, taking it home for bed time reading, then coming back the next day and putting the new knowledge to use. I find I'm still learning new things about AutoCAD just by opening the manual at a random location at reading the section. I'm sure I'm not the only one who's sick of Alt-Tabbing between online help and the program.
Autodesk are still producing manuals for AutoCAD and Architectural Desktop as I found out when we upgraded our office licenses to 2004, but I was bitterly disappointed when my new Revit package arrived. And with the high cost of the software, you would expect to get one.
If that's too much to ask for, then how about a printable PDF version, so we can print them ourselves.