Go to amazon, search for data structures and algorithms. Those four words should bring up a whole bunch of results. Choose one that's well reviewed that has familiar elements to you.
Also, wikipedia is a great place to start (of course).
Sorry I can't be more specific, but I don't know your educational background or experience. Fwiw I used http://www.amazon.com/PartyTime/dp/0262033844/ . The only thing is that I had a decent, recent math background, and if you haven't done "real" math in a long time, it might be one more barrier to learning what you really want to learn.
Also, wikipedia is a great place to start (of course).
Sorry I can't be more specific, but I don't know your educational background or experience. Fwiw I used http://www.amazon.com/PartyTime/dp/0262033844/ . The only thing is that I had a decent, recent math background, and if you haven't done "real" math in a long time, it might be one more barrier to learning what you really want to learn.