i'll be nice to the 0L. Hornbooks are totally useless unless you're doing advanced research in a legal topic area. You don't use them in class and teachers barely even refer to them, if they do at all. My inexperienced contracts prof refered to it repeatedly, but thats because you needed to look it up, its because she was an idiot. Likewise, the most anal retentive and lost students resort to them. These kids usually end up at the bottom of the class.
If you are that anal retentive kid, still don't buy it. It's more likely than not in your law school's library and nobody will be using it.