Sometimes I use this blog as a notebook -- more than bookmarking, a way of reminding me of things I want to get back to.
Dan Colman at Open Culture published a list of free books, movies, textbooks etc. available for several platforms.
Three online books I'm going to study:
eMarketing: The Essential Guide to Online Marketing (3rd edition) by Rob Stokes
How Language Works (edition 3.0) by Michael Gasser
Educational Psychology (3rd edition) Kelvin Seifert and Rosemary Sutto