Hey,
Congratulations on completing your courses! I would like to hear more on how you solved the problem. I took the course you spoke of too.
Andrew’s course is kind of like an Industry standard. He takes time to explain stuff and builds up the interest. I first stumbled across his work on YouTube. He had his classroom course at Stanford recorded and made it available for everyone. I think he now has a course dedicated to Deep Learning on deeplearning.ai. But I personally think that he doesn’t emphasise the importance of understanding the underlying mathematics.
Edit: MIT’s Open Courseware has great classroom course on AI available for free on YouTube.