MAX+PlusII (R) is an industrial-strength digital design package put out by the Altera Corp. It is a huge, complex product. This Web page will link you to various tutorials.
First, there we have the following:
Jason Jue, a computer science professor at the University of Texas at Dallas (and a former UCD PhD student), wrote up a very nice tutorial on this software, plus two "quick reference cards." I have stored those materials here, with Prof. Jue's kind permission: