FRIDAY: >> Get your read on at the DC Library Public Book Sale Friday & Saturday, from 10 a.m. to 3 p.m. at Martin Luther King, Jr. Memorial Library. You have a choice of paying $3 or less on Friday and getting access to the best selection, or $2 or less on Saturday for the leftovers. DCist has to work on Fridays, so we’re planning on showing up at 10 a.m. on the dot Saturday…