By default My Computer is missing from the desktop and the Start screen, so my favourite way to fire up Computer management was not available. I figured out a couple of ways to start it up though.
Move your mouse to the lower left corner on the desktop or on the Start screen, where the small start screen or desktop shows up and just click with your right mouse button. A very handy menu pops up and along with other useful things you will find the link to computer management.
From the start screen
On the start screen move to the lower right corner to bring up the charm bar and click on settings.
On the settings bar click on Tiles.
Set the Show administrative tools option to Yes.
With other useful things you will find computer management icon on the Start screen and you can relocate it anywhere you want.
On the desktop press Windows key + R, then type compmgmt.msc and press enter.
You can easily create an icon ont the desktop if you wish.
With My Computer
First step is to put the Computer icon to the desktop. Right click on the desktop and select personalize.
On the personalization screen click Change desktop icons.
Now you have a Computer icon on your desktop and the usual right click brings up the menu you familiar with.
With Start screen search
The start screen search is designated to be able to start almost everything from there. Unfortunately it cannot find computer management. Press windows button and start typing. Results will pop up and you can choose between Apps, Settings or files.