What to focus on for mixed media editing

Hello, I’m brand new to Touch Designer, and my goals are purely to use it for mixed media editing. Meaning, I wouldn’t be focusing on anything with sound, interactivity, and probably wouldn’t even be making 3D visuals. So my question is, what should I learn? I started the course, but I feel like a lot of it I could skip, but there are probably some fundamentals I need from the course, so I was just hoping someone could give me a sort of roadmap for what I need to learn. Thank you.