Pick out and list all the books you like from my shelf of over 500 books. You choose the 3 you want the most and order them. Then I will pick at least 4 more from the ones you listed to send you free. Be sure to list extras as sometimes I can't find a certain book or it just doesn't fit in the box right with the others. You will get 7 or more books for only 3 credits. I will send as many as fit in the box if I can find them all.