I only have a vague idea of how roto scoring works. You would think ESPN would explain it somewhere, but maybe not. But it's a long season and there's plenty of time to learn.
Edit to add: I did find this on ESPN's site. Maybe it'll help:
Very sad. In the Keeper league, I just traded Hanley. With that, the last of my original draft keepers is now gone, dynasty has completely turned itself over. Checked my original 2007 team, and having re-drafted Buchholz, he's now the only player that is on both my 2007 and 2013 teams...
I have two players that were on my 2007 team. CC Sabathia is the only player I've kept since the 2007 draft, but if he keeps pitching like he did yesterday, that could come to an end. I also have Justin Morneau, but he was a re-draft.