Did you like OS concepts? I'm not really sure I'd recommend it. I think it's OK but a little too theoretical. Personally, I'm a huge fan of Stevens' books (incl

Did you like OS concepts? I'm not really sure I'd recommend it. I think it's OK but a little too theoretical. Personally, I'm a huge fan of Stevens' books (including Advanced Programming in the UNIX Environment). TAOCP is pretty much a must-read for some parts (the kernel memory manager comes to mind). All in all: free is nice but some things are just worth the money.