quest for online tutorials on CNN backprop I'm looking for video or text tutorial materials on CNN backprop that show how weights (convolutional kernels and last layer weights) are trained. Anyone know?
Here is one good material: https://becominghuman.ai/back-propagation-in-convolutional-neural-networks-intuition-and-code-714ef1c38199

This one also might help: https://leonardoaraujosantos.gitbooks.io/artificial-inteligence/convolution_layer.html (it also has other useful materials).