Books are as interactive as you make them.

I read a book by looking at contents, notes, bibliography, and index. Then the intro and conclusion. If the meat is worth reading, that.

This means reading for information rather than pleasure, for the most part, though for me, reading for information is pleasure. Yes, there's some fiction I'll read, but that's different.

There's also note-taking and organising my own thoughts as a consequence of what I'm reading.