Windows 10 has a new tool to allow you to capture and manipulate screenshots - it is called Snip & Sketch and replaces the Snipping Tool which was in earlier versions of Windows
You can quickly take a screenshot at any time by pressing
+
+
You will then see the toolbar below shown at the top of the screen where you can choose between:-
oRectangular Snip - allows you to draw a rectangle around the area you wish to snip
oFreeform Snip - allows you to draw freehand around the area you want to snip
oWindow Snip - lets you select any open window to snip
oFullscreen Snip - takes a snip of the whole screen
You can then draw around (or select) the area you wish to snip, once done you will see the message below indicating it has been copied to your clipboard, and you click click as highlighted to edit it
The image will then open in the Snip & Sketch editor where you can use the various tools to annotate the snip as shown below
Tools include highlighter, pen, pencil, cropping, ruler, protractor and eraser
You can then save the snip, print it, copy it to clipboard or share it