Your situation needs more definition... what size boat are you after, how much money can you spend, are into "camper" cruising or do you need amenities like shower, h&c water, fridge, standing headroom etc.
Trailerable? Do you have moorage in mind?
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"