MATLAB is the official programming language and development environment for this course. The best resource to learn it is the documentation, which is an excellent database of commands and examples. There are several ways to access it:
If you are new to MATLAB, the official Getting Started Guide and tutorials are good resources to get you started. We also have a couple of tutorial lectures up on Canvas.
MATLAB's image coordinate system is very important to understand for this class; you might find this handy.