Here is a list of commands that will help you navigate Git and GitHub in your command line.
Note: these are Mac commands! Windows forthcoming.
cd [name of directory or folder] will let you navigate inside a directory of your choosing.
cd ~ lets you go back a directory.
pwd or "print working directory" will tell you where you are if you get a little lost.
mkdir [name] makes a new directory.
git init (initiates git for this directory).
touch [name].md makes a new markdown file, which is plain text, in whatever directory you're in in the command line.
open [name].[extension] lets you open a file and begin editing it.
git status checks the status of your commits. Use often!
git add [filename].md stages the file.
git commit -a or git commit -m "(text)" commits the changes.
git push -u origin master pushes commits to the master branch.
git pull [URL of remote repo] updates your local repo with remote changes.
git clone [URL of remote repo] makes a local copy of a repo for you to edit.