There's more to playing guitar than just holding it and strumming it. There's a correct way to do things. You need proper posture and you need to hold the guitar correctly, whether you're left-handed or right-handed. Also, you need to hold your guitar pick the right way. This will teach you that. Extremely helpful for any beginner guitar player.
In the first video, learn the very basics of posture, left- and right-handed technique, how to hold a pick, and more. Once you learn all the rules, then you can break them, but not before. In the second video, get some encouraging words about never quitting. There's some good advice for those beginning guitarists who are getting discouraged from learning because it's too hard. Basically, DON'T QUIT!