SourceTree tutorial

https://www.atlassian.com/git/

pull down rep
stages files (ready to go file)
commit , snapshot of staged file

then push to master

https://www.youtube.com/watch?v=srXdUml4_HM

git for age 4 and up
https://www.youtube.com/watch?v=3m7BgIvC-uQ

https://answers.atlassian.com/questions/244429/unknown-user-in-sourcetree

git config --global user.name "Jennifer Connor"

git config --global user.email "your@email.com"

1. 
   The author name and e-mail is configured in Tools -> Options -> General.
   In Repository -> Repository Settings -> Advanced it does not matter if 'Use global user settings' is checked or not.