This is an example document to show the use of headers and footers. "Special features" are a fancy header, initially made for a CV template, and a "final footer" which will only appear on the very last page.
The tutorial to go with it is here.
This is a formal write-up of the first theorem we proved in class. You can use this as a template for your own write-ups. The notes in the comments of the code should provide a brief introduction to using LaTeX.