If you're struggling on certain concepts then your best bet is probably to ask your teacher or even on TSR if you're after a specific explanation of something. I'm sure if you post saying exactly what you don't get then someone should be able to help. Unfortunately physics (even at degree level sometimes) is fraught with overly simplified explanations which don't necessarily make sense until you understand the topic a bit deeper.
My method was read notes and do past papers then read up on anything I didn't understand or got wrong (if I had the mark scheme), I did this for the 7 years I studied physics and it worked for me, but it seems this doesn't work for you.
Another method I sometimes used would be to re-write the textbook or revision book in note form. The process of doing this forces you to register each sentence and pick out what really matters. Then by writing it you more consciously think about the words and it helps me remember. Not only that, but you end up with a more concise version of the textbook for reference and quick reading.