If have read some other topics regarding this subject, but they were rather focused on the immediate understanding of a paper and not long-term knowledge of a topic.
Suppose I read a book about about a rather broad subject, such as one of Tanenbaums books, how can I effectively understand and learn its content? I don't want to completely memorize it (its not for coursework or a test), but at least be able to quickly get back into the topic after, say, a year.
I would mark and comment important parts, but I don't want to scribble in my physical book. Currently, I usually read a section or chapter and write down a short summary of it, but it feels pretty tedious since I spent the same amount of time reading and writing, which doubles the amount of work for a book. Are there any (better) methods or techniques?