Depending on when you got your driving license you may need to look for a small caravan or to do a towing course to give you the entitlement to have a combined weight over 3500kg (I think, or thereabouts). At least that was the rules, there was something about a change, wow this is helpful....
It's best to go to a showroom with lots of different makes/models so you can see what you like and what would suit you.
You need to think about where to store a tourer. It's handy but imposing having it at home (easy to pack to go away). If you need storage it can be expensive depending on where you are. New caravans need to be serviced every year to keep up the guarantee, but older ones you can decide yourself.
A motor mover is a god send, regardless of caravan size.
Facebook is full of groups for the different types of caravan, it can get pretty tribal but by gosh they know their stuff.
We love ours, doubles as a spare room for visitors and if the power goes out it's our prepped escape. It takes far longer to get places then we think, but we have everything we need when we do get there.