Online educational resources about deep learning

Understanding Deep Learning Links to an external site. by Simon Prince. Another good recent book and very readable. On the site linked to the book is available for download as a pdf. There are also "Notebooks" available. Might be worth a look.
Deep Learning - Foundations and Concepts Links to an external site. by Chris Bishop and Hugh Bishop. A very recent book. I think this might be the best option at the moment to supplement your learning.
Dive into Deep Learning (Links to an external site.) - a comprehensive and recent book (with accompanying Jupyter notebooks). It covers much of the same material as in this course and in a similar fashion.
Deep Learning Links to an external site. by Ian Goodfellow, Yoshua Bengio, and Aaron Courville, MIT Press, 2016 - The "first" modern deep learning text book. Missing information on recent developments. But still contains lots of good stuff.
The Science of Deep Learning Links to an external site. by Iddo Drori, MIT Press, 2022 - recent book with some chapters available for free. The pen and paper exercises are freely available and these could be useful to aid your understanding.

fast.ai (Links to an external site.)- multiple on-line courses covering deep learning from mainly a coder's perspective, but they seem to be adding more "theory" to their resources. They also have an interesting blog where ethical issues are discussed and introduced.
CS231n: Convolutional Neural Networks for Visual Recognition - (Links to an external site.)this is a great course and is the basis for this one.

Please let me know if you find a good online resource and I will add it to the above list.