I also agree with Krozjin, one of the things they tell you is that in order for the search engine to find you the more videos the better. In other words, if you have 2 videos the search engine will not pay as much attention to your channel than if you had 30 and as far as I can tell is has been true for me. I think is because you videos will be feature at the end of the vid and on the side column. Plus, you also have a fan base. You can always rearranged your old videos under a play list at the bottom of your channel and name it vintage or something.