It’s expensive for chunk of papers but worth it. I use them during commute to my work just to refresh my memory. It takes me 40 mins to go to work and another 40 mins to come back home. It summarizes answer to every LOS in the book. Help you drill the key concepts in your head. Very sweet.
I have not got them but have put some together myself on coloured card, subject by subject, working on the NLP thoery of repeating the info in as many formats as possible