What are examples of good free books that cover the back-propagation algorithm? What are examples of good free books that cover the back-propagation used to train multilayer perceptrons? I've just started to learn about artificial neural networks, so I'm looking for books that cover the theoretical basics of back-propagation.
Deep Learning by Goodfellow et. al is a good book for anything related neural networks, and it's freely available online. Backpropagation is covered in Chapter 6.5.