They're not worth it in my opinion, to be honest, I think that you're better off self-learning and at the same time gaining experience be it actual or paper trading, you're good doing those two rather than courses, most people that offer this course don't teach the secret to making money, they want to make money out of you.
The step-by-step guide is needed for a very newbie person because sometimes they don't even know what to install. I learned to trade when I was trying Forex market and setting up the chart was even harder when there is no one else provides a guide. The videos are for someone who wants to learn faster without reading because those kinds of people are visual.
There are people who are providing tutorials on youtube so if anyone wants to learn but doesn't have money to spend for the video course, youtube is the place.