Free Python course materials!
I put in a FOIA request to the NSA for their Python training materials and got back a 400-page printout of their COMP 3321 training course.
So, I scanned and OCR'd it. Here is a PDF (warning: 118 MB)
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!