TITLE: Reference on Geometric Topology
QUESTION [21 upvotes]: Geometric topology is more motivated by objects it wants to prove theorems about. Geometric topology is very much motivated by low-dimensional phenomena -- and the very notion of low-dimensional phenomena being special is due to the existence of a big tool called the Whitney Trick, which allows one to readily convert certain problems in manifold theory into (sometimes quite complicated) algebraic problems. The thing is the Whitney trick fails in dimensions 4 and lower. 
As to my background, I've learnt Boothby's book "An Introduction to Differential Manifolds ...". I recently want to dive in some depth into Geometric Topology. But I found the literature is quite a mess. Could anyone suggest a textbook or at least a sequence of books and papers that leads to the frontier of this field?

REPLY [5 votes]: There is a good course by Jacob Lurie in here:
http://www.math.harvard.edu/~lurie/937.html