Starting macbook air automatically How could I possibly eliminate the user accounts at login to start my mac automatically?

Actually I have a couple of user accounts both admin / guest however I do not want to login by entering passwords..

How could I set it up such that it starts automatically without requiring any verification?
Sure you can. On System Preferences → Users &amp; Groups under Login Options you have Automatic login where you can chose an user. 

When you select an user there, It will automatically login when you switch your Mac.