Hey ,
First of all let me tell you , you have done the right thing by starting the MGMAT SC book and believe me when you are done with it you will see a lot of improvement , any ways worked for me at least .
As for the best thing that you can do to remember things I would say if you ask 10 different people you would get 10 different replies . That good , you can try out each of the suggestion and pick the one that you are comfortable with . Remember whatever works for is the best , and what works for you may not be good for some one else this is what I have noticed so far . So the main thing is try to suit yourself and be comfortable with whatever you choose.
Next flashcard are a great help , time and again people have said in this forum to make flash cards . You can make your own or download them for this forum "
https://www.beatthegmat.com/mba/free-gma ... flashcards" . I use Manhattan flash card they are good too .
Here is what I did when I started with my studies . As I studied each chapter I took notes , when I found a term that I didn't know what it stood for looked up in the glossary and made a note of it in my notebook.
Also if you go through the MGMAT SC books they have tried to explain each phenomenon by examples . These are very important ones specially the wrong ones . I copied these examples in my notebook too, not all just one or two explaining the concept and how it can go wrong. The reason I say the wrong examples are important is that when you attempt a SC problem you will know what kind of mistakes to look for in the options , instead of finding the correct one find what is wrong and move on . Believe me this works for me much better and save a lot of time . But this dose not mean you dont need to understand the concept , of-course you need to.
Once done with a chapter I would review my note regularly enough just to keep them fresh. I would every morning just give my notes a quick look for just 15- 20 mins like a warm up exercise .
Well that helped me a lot , hope it works for you too .