My wife used https://www.datacamp.com/ to switch language. Go there and start a course (IIRC they call them "tracks"). It should take a month or two. Then another, then another, ...
> Can someone at my starting point realistically reach expert-level capability in 5 years?
Who knows? The idea is to get more knowledge and understand better the tools. If you are already able to make useful programs that other people use it's already a huge step.
> Can someone at my starting point realistically reach expert-level capability in 5 years?
Who knows? The idea is to get more knowledge and understand better the tools. If you are already able to make useful programs that other people use it's already a huge step.