Dude, nice job! I've been using SuperMemo daily since January 2006! I started using it only for Japanese vocabulary words, but after a few years I tried to branch out and start using it for other stuff. It took a while to really wrap my head around using SRS to learn bigger concepts outside of learning languages. To make a long story short, it all comes down to breaking down any concept or idea into single sentence bites that are added to your flashcard collection. Very often complicated concepts require many flashcards, and (to me) THIS is where learning truly happens. Looking at an idea and saying "what makes this idea work?" and making sure those ideas are covered adequately in your flashcard collection. Now as I listen or read something, I'm constantly asking myself "Is this idea covered in my SuperMemo collection?" And if not, I write down single sentences in my Notes app and add them the next morning after I finish my repetitions. (When do you do your reps? First thing in the morning or throughout the day?) I was annoyed when I was going down this path because there were little to no resources for using SRS to learn complex information (Outside of the SuperMemo web site), so a lot of this I had to learn by trial and error. Let me know if you want to chat, so cool to find others that are dedicated enough to go 10+ years with SRS!