--------------------github-------------

----create----
Global setup:

 Set up git
 git init
  git config --global user.name "Sophist"
  git config --global user.email wzp2153@163.com
      

Next steps:

  git add README
  git commit -m 'first commit'
  git remote add origin git@github.com:sophist114/Python.git
  git push -u origin master
      
-----checkout--------
git clone git@github.com:sophist114/Python.git
git remote add upstream git://github.com/sophist114/Python.git
git fetch upstream

Generate SSH key:
ssh-keygen -t rsa -C "sophist114@gmail.com"
Test:
ssh -T git@github.com

git download :
http://code.google.com/p/msysgit/downloads/detail?name=Git-1.7.7-preview20111012.exe&can=2&q=