Yo. Let me introduce you to my secret technique of learning. I good part of this learning is that it only takes about 15 minutes to study an entire lesson, which normally takes a looooooooooooong time. Another thing is, it can stay in your memory for quite some time, unlike the original style where it is study, sleep, forget. This technique is called mind mapping.
Mind mapping is basically read the text, and when you're finished, you take a piece of paper, and make some drawings and charts that relate to what you learn. When your finished, check the book to see if your chart is correct. For example, when learning about how electric circuits work, a example of what i have to learn, i would read the textbook, close it, and draw. I can about the symbols in the electric circuit, the types of circuits (parallel circuit and series circuit), the advantage and disadvantages of each circuit, and the factors that determine the effectiveness of the output device. Then I open the book, check, then on to the next lesson. By the time your mom comes and say, "have you studied yet?" you can show the papers in where you mind map and proudly say, "yes! And here is the proof." that how awesome this technique is.
After you finish your work, try to sum it up, and if you have, do some of the reviews in the workbook. It helps to refresh your mind, practicing what you have learnt. Just remember, when stressed, DO NOT continue studying. Feeling stressed out makes a disturbance for the mind. You will not have any focus, therefore no knowledge will be earned. If you feel like, AARGH MY MIND IS GONNA BLOW UP! Sit down, enjoy some TV and study again, it will relax your mind. 30 minutes is enough, and after the break continue studying. Make sure though, your mind won't be effected and be brain washed.
Thats it. Bye bye!