Depends, what do you want to know? Lore? Gameplay? Specific mechanics? Anyways, if this is your first Dark Souls, I would advise picking the Knight starting class. Provides the best overall stats for new players, decent starting weapon and a shield that has 100% physical defense. This game is punishing for new players, so I would suggest to be a bit prepared for a rough beginning. Not to worry though, you will eventually learn from your mistakes and succed! Learn to time your dodges right before an enemy attack and make good use of your shield! Always proceed with caution when facing new enemies and try to remember their attack patterns. The game does have in-game co-op and PvP.