If this is your first skim reading, or your second more detailed reading, or if you feel you haven't quite mastered all the material, then this is the point to go back to the beginning and have another go in more detail, and perhaps use a bit more elbow grease and get those hands working on the keyboard.
If you have mastered this material, then it is time to move on. You can start digging in on your own, but a bit more time with the other manuals is probably worthwhile.