I'm currently in the process of going through my (Python) books and making a bundle that includes assignments. These assignments are self-checking unittests. (I guess they would be akin to fill in the blank). Maybe I need to include free form assignments as well (essays).

Personally, I do most of my reading on an e-reader, in bed, before going to sleep. I think the approach suggested here would require my re-readings to take place closer to a computer.