​iPad as a second monitor?

I was poking around for tech tips and saw this one. There are many links on the interweb for teaching you how to do this. I chose a YouTube vide because I like to watch stuff. That’s how I learn.

I didn’t know you could do this, use your iPad as a second monitor. I know a lot of people who like to have a second monitor while working. I knew someone, Cherry, who had me setup a third monitor for her at Ghost Ranch. She was a great worker and very productive so, I guess it worked. I just have one monitor, but it is rather large.

If you want a second monitor and you already have an iPad, or, if you want a second monitor for your laptop when you travel, then using your iPad could be just the thing. This is already built into the newer Macs and iPads, so watch the video and give it a try. If you have a PC or older Apple devices, then there are apps to help accomplish this.
Watch the video HERE. 

It looks fairly straight forward, especially for a Mac. The guy suggests a $10 app for the PC, though he also mentions a free one. He thinks the paid version is easier. Check it out and let me know what you think.