While my sister was visiting for a week this last month, the two of us went used book shopping and I found a treasure trove of books. In all honesty I was suppose to be just the driver but one book led to another and another. Before I knew it my arms were full enough that one of the store employees offered to get me a cart. (sheepish grin)
I hit the jackpot for sewing reference books. Singer has a set and I found 4 or 5 of them. I'm not sure how many are in the set but I'm happy with what I found. What I like best is their pictures. They are so great. Being a visual learner, pictures make it easier to understand sewing techniques.
I also found some great reading books, non-fiction and fiction. As you can see from my reading list, I haven't wasted time driving right into them.
Along with used bookstores, I've also got caught in a "new" bookstore where I found two great sewing books. And what's even more awesome is I actually read them and they're exactly what I need. I'm tentative at buying new books, but especially sewing books because they will usually sit on the shelf and are rarely used. I think these are the only two sewing books I've read completely through. Now to fully make it completely worthwhile I need to actually start making something from them.
P.S. Sis bought way more books then I did ;)