OK I'm a wicked newbie to boating
As much as I love

from the shore I was thinking of going over to the dark side and get a boat
What would you guys say the min size for a saltwater ship should be.
I saw a 20 ft cuddy cabin in my price range but would this be too small?
I was thinking of picking up some books or looking into classes on boating...
Is there any equipment that is a must? other then a boat and a radio oh and life vest .
Thanks for the help