I always always recommend orpingtons to first timers. They are friendly, docile, and in my experience, excellent egg layers and wonderful mothers. They forage well, do beautifully in the blazing Texas heat here, and I hear they do wonderfully in the cold too. They are great lap chickens, and they are beautiful to boot! Some people may disagree though. Orpingtons are what Australorps (
Australian
Orpington) were based off of, and both are wonderful choices for first time owners.
One thing to keep in mind with easter eggers (often sold as true auracanas or ameraucanas), is that at least in my experience, they need time to grow and mature. They always seem a bit standoffish and shy until around the time they hit point of lay...then they seem to blossom into rediculously sweet follow you everywhere puppy dogs. Also, they may not always lay a blue or green egg. I have had an EE that lays brown, and I have heard of others who have laid white. These guys are mutts though, so they may have any and every personality trait and physical characteristic of any breed out there. What distinguishes them is that somewhere along the line they were crossed with auracans or ameraucanas, and have the potential to lay a blue or green egg.
I agree with the others. Look at the breed reviews here on BYC! They will give you a really good idea of the breeds that are out there, and are reviewed by lots of people here who have had or do have that breed.
Just remember, how your chicken behaves and lays may have a lot to do with where you get them from. For example, I have found hatchery rhode island reds and barred rocks to be bullies and just all around unpleasant, but breeder (not to be confused with producer) stock have far different personalities. I have heard the same for wyandottes, but mine are very sweet and inquisitive. They are more reserved than my orps in that while my orps will shamelessly jump up and rush me for treats, my wyandottes will wait politely until I OFFER them the treat rather than just rip it out of my hand!
(all of my birds are hatchery birds)
edit: OOOH what Lbrad7 said! Speckled sussex are wonderful, and full of personality! Basically, what it boils down to is what you want them for. Do you want good foragers with great egg production? Look to the mediteranian breeds like leghorns. They tend to be flighty and less cuddly than the DPs which I favor. Do you want an in-your-face pet kind of chicken? Go for a Dual Purpose like australorps, orpingtons, sussex, etc. Do you want good foragers, survivors, and mothers? games may be your answer. Its all in what you want in a bird