I'm in my 4th week of my first class. I'm 54. I have a CS undergrad from 1996. I too caught the ML bug and...this first class is kicking my butt but I'm LOVING the experience. Quality education, very inexpensive, and I can quit any time. I'm doing it for the love of learning and don't need to do it. It takes $100 to apply. Just go for it and try a class. I will warn you without a tech background this particular program will be tough I think. I'm struggling catching up w/ Math