Here are some notes on Riemann Solvers, for more info the book "Riemann Solvers and Numerical Methods for Fluid Dynamics" (on which the notes are strongly based) by Eleuterio F. Toro is strongly recommended.
There are two papers that should be read by all, they will feature in future lectures and will be discussed. The first is the original paper on the Stagger code (nearly the same method is used in Bifrost). The second on how to treat coronal heating by braiding by Galsgaard & Nordlund 1996.
When finished working with exercise set 1, please prepare a short written report or presentation (with figures and code snippets!) so that we can discuss your experiences. This will happen either Thursday September 20 or Friday September 21.