Take notes. It’s the only way I’m able to hang onto specific information and concepts ( ie code syntax, structures, processes ) in any reliable way. Your own notes are infinitely more valuable than any textbook(or blog or forum or whatever). Your own notes will be in your thought patterns, meaning when you read them later the information is ‘ready-to-eat’. Textbooks written by someone else provide information which first needs to be wrestled into shape before you can use it.

I have a self-hosted nextcloud server. I spent weeks learning how to set up apache, SSL certificiates etc. Then when 3 months later something broke, I had to learn it again from scratch - which led to me writing ‘guides’ for myself for all the stages of the process so the next failure would be easier to recover.

If it’s worth remembering, it’s worth writing down.

All the best! New languages (human or machine) are always difficult, but incredibly rewarding.

Thank you.

What do you suggest hand written notes or digital ones?

I have also found myself in this situation and try to keep obsidian notes. But sometimes it feels counterintuitive, because there is so much to write. I fixed a bug, should I write it down? But I also fixed three to two bugs, should I write them all down?