Please see the official course website which has links to the current course where you eventually find links to slides, videos (of the lectures and the tutorials), and summaries of the lecture content. You can find more detailed descriptions of the code there.
Note: All the code except for the few cases that include code by other people (like tSNE and MNIST; always clearly marked) is hereby provided under the terms of the MIT license (earlier, this was Attribution-ShareAlike 4.0 International (CC BY-SA 4.0), pick that if you prefer).