I really love computer science, coding and mostly all the amazing things you can do with this knowledge, i feel i finally landed in my world.
I'm doing a Javascript course now and while it is really engaging to learn about how a language like that works and how to build with it, i'm getting quite tired and frustrated..
Now, i'd say i am quite meticulous when studying and i use some studying techniques to really integrate what i'm learning, but that means that 1h or even less lesson can take me all the time i have to study in a day to be understood, noted down and then repeated over the following days..
There are a lot of quite complicated concepts to understand and memorize, and, as i'm also working, sometimes it gets quite tiring.
I feel like there's this huge amount of never ending work and concepts before i can actually start do something cool with the knowledge i have, and i really want to start doing something cool.
I re-started to study after many years so i'd say it's also because of that if i'm not really used to it and i can't process much informations at the time.
How can you get better into gaining knowledge? how can you prevent getting fatigued?
I would say to give yourself the opportunity to have some fun with it. Maybe that could take the form of trying to apply what you know into some fun little project. Think about whatever you just studied and try to imagine what you could do with that knowledge. Don't worry about constantly making progress. You will learn a lot just from picking a little project and trying to solve all the little problems you run into.
I agree. When I learned programming over a decade ago, I didn't follow a course and I'm not sure courses were particularly widespread. Looking back, what I made was terrible quality but it got better with time. At first I'd even copy entire sections of code into place unsure of what it really does and eventually I would make it work. It sounds like OP is much further along than that. Just make something, it's the best part!