I have worked with Exchange since version 4.0 and before that MSMail 3.5. I was at first irritated when Exchange 2007 came out and Powershell was added not just as a handy tool but really as a must in order to properly manage Exchange. Once I overcame my fears of change and understood the direction Microsoft was pushing everyone I have really enjoyed it and wished they had done this sooner.
When I first got started using PowerShell it was difficult to find out how to do what I needed to do quickly. Using OneNote, I kept track of all my findings for quick and easy reference so I didnt have to troll around the internet searching again and again for what I needed. So why not add my own contribution to the mess that exist out on the internet, but make it a little more brief and to the point.
Hope this helps others out.