Below are various notes for classes or seminars and expository papers (these also appear on the publications page).

Notes:

1. Notes on convex surfaces from a contact geomety class. Last revised July 2004 (very rough form!) pdf and ps.gz
2. Very basic notes on sheaves and divisors. These were from a series of seminars I gave as a graduate student some time in the early 90's. These should definitely be used at your own risk! pdf and ps.gz

Expository Articles:

1. Lectures on open book decompositions and contact structures
   Preprint 2004.
2. Legendrian and Transversal Knots
   Preprint 2003.
3. Introductory Lectures on Contact Geometry
   Proc. Sympos. Pure Math. 71 (2003), 81-107.
4. Problems in Low Dimensional Contact Topology
   joint work with Lenhard Ng, Proc. Sympos. Pure Math. 71 (2003), 337-357.
5. Symplectic convexity in low-dimensional topology
   Topol. and its Appl. 88 (1998), 3-25.