The lecture notes on geometric topology from Harvard are a good reference. This has all the depth necessary regarding the subject. Here is the link [repaired by O'Rourke]:
Lecture notes are a good start to learning the topic since the introduction will be given at an ideal pace. If these don't serve to assist in the learning of the interesting subject, take a look at the books mentioned at the stackexchange link mentioned in the comments: https://math.stackexchange.com/questions/128962/reference-on-geometric-topology
