I'd start with #1 & #3 and ignore #2 for the moment.

Teaching people to program is a brutally competitive space with some pretty sizable funding behind it.

But teaching current programmers to make more money and win more clients? Much lower barrier to entry IMO.

The reality is, there's no magic formula in launching something like this (although, many will attempt to sell it to you :)).

My Advice:

1) Build a useful course.
2) Create a presentation touting the benefits of your course.
3) Setup reoccurring webinars (read: record once, have daily 'airings')
4) Buy a niche set of Facebook ads to your dream buyer.

Test from there... Happy to discuss further if you're interested.