The person in the last video isn't me, but I hear VERY similar things when I drive around in my car. I will say my CV boots appear to be in good condition though...
If I was, as a beginner to car repairs, to decide to fix this on my own, would it be a large undertaking? I plan to take my car to a mechanic and have them diagnose the issue to be sure this is what it is and then go from there. I have both the Haynes manual and the official repair manual for my car to go from as well.
Oh yes, when I say beginner, I mean my knowledge of car repairs mostly applies to maintenance such as oil changes and changing fluids.