I don’t want to downplay the value of EA’s courses, nor discourage buying from the BALG product line. There’s a lot of good stuff to be found.
However, I would personally mix and match teachers and sources a bit more though, if you are planning to go all in on black magick and all out on following courses.
If you plan to focus on black magic in particular, I also highly recommend Conner Kendalls Black Magicians Handbook to start out. It gives a decent path to follow for a beginner and a solid foundation, imho.
He also has posted an awesome intro into black magick collection on this forum.