The reading retention setup I wish I'd built ten years ago
For a long time my system was kindle highlights plus a vague intention to review them someday. Readwise sends you a daily digest of old highlights which helped a little, but re-reading a highlighted sentence you don't remember highlighting isn't the same as actually knowing what the book said or being able to use the idea.
The missing piece was having somewhere to put the things I actually wanted to keep, not just flag. Notion handles project and work stuff for me, but for books and articles where I want the ideas to genuinely stick, I use remnote because it lets me schedule review of the specific concepts rather than just storing them. The difference between a notes app and a notes app with spaced repetition built in is larger than it sounds, it's the difference between a library you never visit and one that emails you.
Readwise still does its thing in the morning for passive exposure. Remnote is for anything I'm actively trying to retain, which is maybe 10-15% of what I read, the rest I let go. Notion stays for everything work facing that I need to reference but don't need to memorize.
Three tools doing three different jobs, none of them overlapping. That took longer to figure out than I'd like to admit.