Since you only have the book, i suggest you learn fully one piece at a time. Your questions cover everything which tells me you are not settling down & studying completely 1 part at a time.
Like: Learn what prepare is. Practice prepare for a couple weeks for all kinds of reading & studying & just everything. Practice it & notice the difference this 1 part can make in all areas of your life.
Then move on to preview.....& do the same except you will combine prepare w/ preview now. Don't think about the following steps at all, just the one step you are now practicing.
I promise you it'll be much easier to learn.