I've always wanted to do something like this. Could you share more about it? I think I could provide a lot of value to a new dev but haven't identified a business model that would work.
Company selection, CV review, coding exercises and question prep. With one guy he actually recorded an interview without my asking him to do it, but it turned out to be really helpful as I discovered he needed help with basic small talk type skills as well.
The main challenges are: 1) Finding people that are at that point in their career 2) Most people actually are lacking in technical skills and need to up their skillset 3) The obvious challenge that people without jobs don't always have a heap of spare money floating about 4) Tech stacks are often quite different (although not really a problem for me personally).
It's not too hard to sell people (still a numbers game though), but the price point was Def a sticking point.