Pay to view videos. Where do ? Where to I start?

I am a graphic designer, new to drupal and want to learn how to create a site with some videos on it 20 videos about sales techniques as a first exercise).
Where should I start, in order to make a simple site that does this? I have access to lynda.com and I am learning everything there, but there is nothing there about linking pages to payments or whatever the method should be.