Please have a look at this:

https://nl.mathworks.com/campaigns/products/offer/deep-learning-with-matlab.html

This is a good starting point.

https://in.mathworks.com/videos/deep-learning-in-11-lines-of-matlab-code-1481229977318.html

Depends on what you are working on.

This is a good book

MATLAB Deep Learning: With Machine Learning, Neural Networks and Artificial Intelligence

by Phil Kim

Besides what they mentioned, see these models and you can download them https://au.mathworks.com/solutions/deep-learning/models.html?s_tid=srchtitle