Here are the slides from several recent lectures:

Left Invariant CR and Pseudo Hermitian Structures on S^3, PDE and Complex Analysis, Miami 2016.

Left Invariant Structures on S^3, International Workshop on Geometric Analysis of PDE and Several Complex Variables, Serra Negra, Brazil 2015.

Left Invariant Structures on S^3, Harmonic Analysis and CR Geometry, Oaxaca, Mexico 2015.

CR Structures on Open Manifolds, Workshop on Analysis and Geometry in Several Complex Variables, Taipei, Taiwan 2014.

CR Structures on Open Manifolds, Workshop on Complex Analysis and Geometry, Wuhan, China 2014.

The Existence of CR Structures, International Workshop on Geometric Analysis of PDE and Several Complex Variables, Serra Negra, Brazil 2013.

Mappings into Complex N-Space, Workshop on Several Complex Variables and Complex Geometry, Taipei, Taiwan 2012.

 

And here is the manuscript from another lecture:

Optimality for Some Target Dimensions, Colloquium, Universidad de Guanajuato, Mexico 2012.