From publisher blurb:
There are a wide variety of character types which the ranger encompasses. In replicating these character types in a game, it is not necessary to create new classes or feats. Rather, existing classes and feats can help one to shape a character to match a particular paradigm. This is what NPG Rangers has done. Inside, you will find details on the hunter, the outlaw, the protector, and the scout. All these are character archetypes that fit into the concept of the ranger, some more closely than others. Each of these includes a character to illustrate how one can use existing classes, skills, and feats to replicate this type of character. This also means that GMs have four complete NPCs. The animal companion for each ranger is listed after that ranger.