RE: Book Sale
Near my house, a local charity runs a bookshop that deals exclusively in used books. Rather than going through the hassle of running a yard sale that may not actually dispose of all of your books, I suggest that you look for a charity-operated used book store, and donate all of your unwanted books to them.
Before I go to the bookshop, I print an "inventory" of the books, and when I go to the bookshop, I have them sign my inventory list, and stamp the store's name and the date on it, in order to verify that they received my books. The bookstore personnel suggested that I value them as:
.50 for small paperbacks
1.00 for large-format paperbacks
1.50-2.00 for most hard covers
2.00-3.00 for large-format (coffee table size) hardcovers
To me, this is a hassle-free way of disposing of unwanted books, while simultaneously helping a charity. In addition, this donation is a tax-deductible charitable contribution when April 15th rolls around!