I’m not sure about PC’s, but it sure is easy to do a screen recording on a Mac!
Just open up QuickTime, click on file, and then select “new screen recording.” Make sure you click on the drop menu to turn on the built-in mic once the black recording control pops up. Click record, and boom! So easy! Now you can do as many tutorials as you want (if you have a Mac, that is)!
PC users, show us your way!