Scripting - How to study Windows Powershell scripting

Here are some interesting links to study Windows Powershell scripting:

Some interesting links:
http://www.powershellpro.com/powershell-tutorial-introduction/

http://www.howtogeek.com/141495/geek-school-writing-your-first-full-powershell-script/

On video:
http://www.youtube.com/watch?v=7LMo0nxFB_g&list=PL6D474E721138865Ahttp://www.youtube.com/user/overworkedadmin?feature=watch

http://www.youtube.com/watch?v=-Ya1dQ1Igkc&list=PL15Mg3eNVa6I9HGfk-1OQP0jyGMeQzYpA