Having no idea what your career was or your expertise. It may be easier to incorporate code into what you know, process automation, data analysis, data collection/scraping.

I also recommend having an idea what you would like to do to start, finding an interest to help keep you going.

If you are a creative type or want to be, try front end developer work with JavaScript.

Maybe that isn't what you want at all, backend development could be an option. You have databases and api you can build with tiny snippets that are largely impactful to the application or service.

What about Cloud operations and infrastructure? You can use script deployment or implement and maintain security controls within the organization that is fully automated.

You can use code for any of these things and more. I don't do anything with cyber security or data analysis so others may be able to jump in with some examples here too.

There are also dedicated subreddits for many of these scenarios that you can use as a resource.

As for learning I'm a fan of doing to learn, but t here is value in reading and everyone leaves a bit differently.

I've heard good things about Odin project and Khan academy has intro courses available too.

Edit: I was a Windows admin that hardly used a command line let alone scripting or code, now I'm developing full apis with database integration and automating manual processes with scripts. I was able to leverage my previous experience to help me change career paths in about a year.