It’s Sunday, which means it’s high time for another Kindle eBook sale. Today’s selection includes 40 “top titles” with little in the way of a cohesive theme. Classics like “A Wrinkle in Time,” memoirs like “Complications: A Surgeon’s Notes on an Imperfect Science,” and recent novels like “Baby Teeth” are all included, and everything’s priced at just a few bucks, so go get downloading.