We will be giving an introduction to the open source mathematical software Sage (http://www.sagemath.org/). This tutorial will start from basic use and computations in Sage, but then move to demonstrating the features currently available in Sage. The focus will primarily be on aspects of representation theory, including symmetric functions, the Weyl character ring, crystal bases, and various specific algebras available. No previous programming knowledge is required, and you do not have to have Sage installed.