CubeNote is a quick reference of all SCVMM specific commands. Sure, you could type the line below, but then you'd have to sort it all out yourself. Jonathan formatted the commands to fit on a single sheet, organized by function to find the right command. The sheet is organized by command type, so find the action (verb) you're interested in, then locate the object you want to act on (noun). Possible actions are: Add, Get, Move, New, Refresh, Set, Update, and various others.
Get-Command -PSSnapIn "microsoft.systemcenter.virtualmachinemanager" | write-outfile c:\temp\SCVMM_Commands.txt
Tip: Make sure you open a PowerShell console that has SCVMM cmdlets already loaded by clicking PowerShell button shown below. Open the Admin Console on the SCVMM Server itself to save yourself some headache.