Active preparation
Whether you use the videos, internet research on the topic, or the script to prepare: In any case, it is useful to have a pen and pad ready and take notes. Some people like to watch the videos / the script on the bus while eating, cooking, or on the toilet. But: would you do the same in a lecture? Or think of it another way: Your washing machine broke down and as a mechatronics engineer you don't miss the chance to fix it yourself. Unfortunately, you only have a desktop PC with the Internet at your disposal. Wouldn't you write down one or two things before you go down to the basement and start repairing?
The goal of my course is the solidification of knowledge. For many, this is done by applying the material, i.e. through (the) exercise(s). Others need discussion and controversy, i.e. the group work and the plenary. Writing down can also support the learning process. And for the exams, it won't hurt to have summarized the things that are important to you.