A great start can be had from
Willie's PSK Cheat sheetI would follow that up with notes taken from the books in the
ETS Lending library There is probably more from those two source than you would want to carry around in your shirt-pocket notepad. That is why many here carry the digital equivalent. There is simply WAY MORE data capacity in a PDA than a 3"X5" spiral-bound notebook. For example, in a decent sized PDA you could store the entire ETS lending library and still have room to add a few books and take notes. In your paper notebook you will fit the cheat sheet and perhaps another 10 pages of info and then reserve the rest of the paper for taking notes.
OTOH the info in your notebook will be accessable long after the batteries die, the screen cracks, the viewers become obsolete etc in the PDA.