When switching, do this only at the end of a chapter, not in media res (in the middle of action).

Also summarize the last thing that happened/got explained for an easy refresher the next time you get back.

Bib-Card? Potentially Marginaelia? Feeling more like a dedicated notebook for this. Need to work out.

Vashik does this summary of a chapter on index cards... Useful to do in a Zettelkasten, or too much effort?

Vashik recommends to keep a list of books to read. I can do this on Obsidian, but I also keep a reading log like Parker Settecase recommends.

For parallel reading, read multiple different genres/topics to prevent confusion and boredom.

Due to this time/mood conundrum, you can read books that you do feel like reading.

Interesting, when we say "I don't have time", you can in some, if not most, cases replace it with "I am not in the mood for this", because you prioritize other things you feel more like doing.

According to Vashik Armenikus, reading and book collecting becomes an obsession/addiction when you do it indiscriminately, without thought, without taking into account the bigger picture.