In my opinion, any of the overstreet books will show you the range of flaking, material, sizes and variations of the major point types/clusters. As Matt pointed out, it's chock full of errors, but overall it'll give you lot's of pictures of a lot of authentic artifacts (and some really good fakes if the rumors are true about a few pieces.)
The Perino books are great, but don't come cheap and might be more info than you want (I love these books, but they aren't exactly page turners.) Like Mooreheads Bannerstone book, or the Birdstone book by Townsend, they are great investments that have increased over the years. They have that great detail that can only come from black ink drawings of points (great for understanding how authentic artifacts were made.)
For the general collector, I like any of Hothem's books. Lot's of pictures, stories, details, going from paleo to historic all readily available from any big book store, or Amazon. They aren't books that'll take you through the technical differences between the lance forms that might be found in your area (Angostura, Rice Lanceolate, Agate Basin, Hell Gap, Nebo Hill, to name a few), but it'll help you recognize the common point types, tools, and misc. artifacts you are likely to find or see.
If you are thinking about buying artifacts, I like Bennett's first book. That book, plus some basic magnification and your own field finds in hand for study and comparison, will save you a lot of money over the coming years.