Sona, if you are an aggressive player, Janna or Soraka, if you are passive. Items really depend on your play style. Always get sightstone as fast as possible. If you lose lane early, get the gold per five item up to its second rank and wait for jungle ganks.
I find it easier for support players who are just starting out to play tankier supports before the squishier ones.. leona , nautilus are really good for this.. nautilus especially since his hook is really easy to land even though its a skill shot..