Part1

Part2

Tutorials

Reading Text Files

Windows PowerShell Quick Reference [Microsoft]

Windows PowerShell 3.0 and Server Manager Quick Reference Guides [Microsoft]

Operators

JSON to Powershell

JASON Parsing (Check out what else you can do in PowerShell v3 here and here.)

Backup

Zip_1 and 7Zip

Text Manipulation Using PowerShell
      Part-1: Text Manipulation in PowerShell using Trim, TrimStart , TrimEnd methods
    Part-2: Text Manipulation in PowerShell using .ToLower and .ToUpper method
      Part-3: Text Manipulation in PowerShell using .StartsWith() and EndsWith() methods
     Part-4: Text Manipulation in PowerShell using .Replace(), and .Remove() methods.
      Part-5: Text Manipulation in PowerShell using .Contains() and .Equals() methods
    Part-6: Text Manipulation in PowerShell using .ToCharArray(),.PadLeft(), and .PadRight()  methods

Powershell Basics
  
Part-1: Single Quotes (') and Double Quotes ("") in PowerShell.
   Part-2: Variables in PowerShell.

Scripts