first attempt at a new student lesson
fixed some formatting and grammer errors
proposed replacement for shell-overview
Fixed the copious spelling errors
fixed 'grant_proposal' directory errors
revert tab completion to 'twice'
reinstate metadata
Laying out new material
Starting beginner's lessons on Python
Second beginner's lesson on Python
Third beginner's lesson on Python
Fourth beginner's lesson on Python
Added example multi-line indented block
Spelling and markup
More code markup
Renaming file to be consistent with hyphenation convention
Final two lessons on Python (still need challenges)
Removing .pyc files when cleaning
Updating based on feedback from @jdblischak
Adding challenges to the last two notebooks in the series