  These notes are based on the lecture the author gave at the workshop
'Geometry of Strings and Fields' held at Nordita, Stockholm. In these notes, I
shall cover some topics in both the perturbative and non-perturbative aspects
of the topological Chern-Simons theory. The non-perturbative part will mostly
be about the quantization of Chern-Simons theory and the use of surgery for
computation, while the non-perturbative part will include brief discussions
about framings, eta invariants, APS-index theorem, torsions and finite type
knot invariants.
