Not Baen's typical offerings, but still look interesting. All are on-going and will be updated periodically.
Les Johnson, Free Nonfiction 2011
Currently contains "The Size of it All" by Les Johnson.
Patrick Lundrigan and Larry Correia, Free Short Stories 2011
Currently includes "Space Hero" by Patrick Lundrigan and "Tanya, Princess of Elves," by Larry Correia.
Baen Books, Reading Guides 2011
Currently contains teacher's guides on "titles suitable for young adults" for The Rolling Stones by Robert A. Heinlein and 1632 by Eric Flint.