Grabbed a copy and just did a quick browse through. Maybe you can add the newest hardware revision codes (my last Pi is an 'f'). Looking at your list for the extended version, assuming these aren't in it, how about info on accessing the Pi via programs like MobaXterm or Navi-X and maybe something on setting up wireless.
The free version - bullet point 7 on setting up SD card with Windows, there's a typo ('drive leteer'). Can you highlight the Attention on the end in Red or do something else to convey its' importance. Win32DiskImager choses my USB hard drive by default when starting - I chose the right drive, but I didn't see the little pulldown menu at first - maybe a picture of the program with numbers and the numbers would correspond with the steps. For instance, number 6 pointing to the folder icon and your text for number 6 saying choose the .img file.