[hctaw]

The barrier to entry is not the availability of materials, it's the jargon and working knowledge of the ecosystem required to find those materials and decide which are worth your time.

I've been the C++ programmer with a week to learn a modern JS framework. I'll never do that again, and will always hire an expert to bring myself and a project up to speed. It's a massive waste of time and money.

You also won't be "better" than anyone else at it, since expert-level C++ knowledge is not very translatable to other domains (but that's a C++ problem more than anything, working in it is like playing a piano and not riding a bike).