For non-language topics, you have to start being creative when it comes to flashcard models, though the basic principles are the same as I use for languages (as per: https://fluent-forever.com/create-better-flashcards/ )
In the case of this particular book, the information was consistently presented as follows:
Here’s sentence A. It sucks.
Here’s sentence B. It’s awesome.
Sentences A and B convey the same information.
Let’s talk about what makes sentence A crappy and sentence B awesome.
So I did this:
Basically I created a test that required me to know whether a sentence was “good” or “bad” without any context clues other than the sentence itself.
I chose an image that represented the information contained in both sentences (in this case I used a book, since this sentence is about writing short books). That made the questions more concrete and memorable.
Then I chose an image that represented the concept I was trying to teach myself, in this case a see-saw symbolizing the idea of balancing parallels in sentences. This makes the concept I’m trying to teach myself more memorable.
Then I did it 100 more times.
These were the necessary ingredients:
– I read and understood the source book.
– I came up with a way to test that understanding, that I’d be able to succeed at immediately after reading the book, but would probably forget the next day.
– I came up with my own visual reminders of those lessons
If you use those 3 ingredients in whatever it is you’re trying to learn, you’ll be able to remember it via SRS.
The only thing I’d add to that is that complex topics--like biochemistry, for example--benefit a LOT from mnemonics and memory palaces. I can actually strongly recommend http://picmonic.com for the former when it comes to medical school – my fiancee is using their stuff and loves it. As for the latter, I might suggest Anthony Metivier’s stuff on the subject: http://www.magneticmemorymethod.com. He uses memory palaces a lot more than I do and I think would be a better source for info on them.