On a windows computer, you just press the Control key and the Print Screen Key. That copies the image on your screen. Then you open whatever program you have, like Paint, Photoshop, or the like, open a new project, and paste. Presto! I couldn't begin to tell you how to do it on a mobile.
I personally have never had a redirect on this site, but I also have an ad blocker... that doesn't stop these ads on the site. It might also have something to do with your browser?