They have been working on the Community software for weeks and it is a total nightmare at times to try and help others in.
You can either:
https://support.microsoft.com/en-us/help/13776/windows-use-snipping-tool-to-capture-screenshots
Or:
Press the Windows Key + PrtScn Key > it will be saved to Screenshots folder under Pictures.
5 Ways to Take Screenshots in Windows 8 - wikiHow
Cheers.