This course introduces students to the fundamentals of High-Performance Computing (HPC) through a slide-show and a series of practical exercises. To complement the presentation, a series of practical exercises are provided in supplementary modules, which can be used to reinforce the material introduced in the slides. The practical exercises are designed primarily to be completed on the Cray XT supercomputer at the Swiss National Supercomputer Centre (CSCS), Switzerland. Non-CSCS Users may complete the practicals on their own system by downloading source code.