Developer training is a perilous task. The initial project of any new entrant is fraught with execution and financing risk. Attrition will be extreme. Instruction manuals on how to do it are few, or non specific enough to be useful. The key knowledge holders of specific moat protected niche are often loath to share or train new competitors.
Most training opportunities (like seemingly a lot of professional development classes) are expensive and not deep enough to actually achieve what is needed. Or worse they are just thinly disguised as marketing for those that wish to profit from aspiring developers by exaggerating the need for the service they offer. What is really needed are intern positions in a sort of guild. Instead of getting a salary, you’d need a reverse exchange where the intern funds their own involvement. Note the company owners who’d have to run the program value their own time at among the highest in the industry - these are people running eight figure businesses with plenty of time demands to juggle and risk burdens. They don’t need to carry around time consuming trainees.
I’m not sure what the answer is here. I’m posting my own thoughts - for free - on my Substack but it isn’t really sufficient. But it’s free !