Just grab the latest release from Annoying Manager from downloads page and unzip it to any folder in your computer.

You must have the Microsoft .NET 4.0 runtime installed, and if you wish to use the reporting features from Annoying Manager, you need the Microsoft Report Viewer 2010 Redistributable Package too. You can get the last one at Microsoft's web site: http://www.microsoft.com/en-us/download/details.aspx?id=6442.

There are other things that must be considered: