hi all, newbie from Lincolnshire,, never had a caravan before so I thought I should ask you good people for advice??? whats the main points to look out for when buying a used van??? obviously signs of damp??!!,, but whats the little hidden dangers that need looking for??? I'm looking for a fixed bed 2/4/5 birth fixed bed, single axle, with a mover around about the 4/5 grand mark,,also I've never towed anything in my life before so very nervous at the thought of it??!!!!,, thanks in advance regards Martin,,