I just use alt + print screen(i have 2 monitors, so alt makes it only capture current window, instead just prntscrn which would capture both screens), then Ctrl+V on Imgur.com, or in MSpaint if you want to add/edit something.
If i just want to save a pic for later I will hit windows key + prntscreen, which saves it in your Pictures folder.
I also can hit Ctrl+Shift+E , though I haven’t used it much, with AMD’s Crimson app, formerly Catalyst Caontrol Center.
Honestly, just hitting alt+prntscreen and then pasting on a imaging host site or into print screen is usually my go to.
Hopefully that helps.