There are alternatives to ChatGPT 4 but none as good and easy. I would use it for anything you don’t mind openai knowing. (Like learning or public open source software) If you’re working on something top secret, then you might want your own AI model running locally.

I personally wouldn’t focus on the bitcoin or nostr protocol details until you have computer science basics and know which direction you want to go.

Eventually, if you decide you want to create a nostr app, you can make use of the development kits that are available at that time. There are a few now for nostr and I’m sure they’ll only get better. There are other development kits for bitcoin and Lightning too.

Let me know if you have any questions about any of that.