July 2018 tutorial and symposium on Modeling Supra-molecular Structures with LAMMPS will be held at Temple University.
LAMMPS workshops have been held in Albuquerque, NM, roughly every 2 years, usually in the summer. The programs, presentation slides, and posters for each workshop can be accessed via the following links. Each workshop included (one or more) tutorial sessions with slides that can also be downloaded.
A workshop-like tutorial and symposium, entitled Materials modeling with LAMMPS was held in August 2016 at Temple University.
Also see the Tutorials page page for additional info on past LAMMPS tutorials, with lots of downloadable material.