It's a bit dated, but it's good for building foundational CS knowledge.

This is a very helpful lecture on OpenGL.

I think this will be helpful for checking the basic elements of a presentation that are easy to overlook.

Before diving into OpenGL in earnest, this guide explains settings, variables, and internal structures in a detailed, kind, and easy-to-understand manner. The provided code is not difficult, and because of its simplicity, it is easy to modify the code to create your own framework (?) to apply to examples in future series. The best part is the emphasis on the graphics pipeline; it doesn't just show the results of the provided examples, but uses diagrams and explanations to easily teach how the results are constructed through each stage of the pipeline. I am looking forward to the next part.

This lecture systematically organized and supplemented the concepts I only vaguely understood in my head. Through this, I feel I can now distinguish between what to avoid and what to focus on with clear criteria when preparing for future presentations. It was a great help in establishing a direction for my presentations. Thank you for the excellent lecture.