Generally, everyone tries to start off with tobacco since it's the closest flavor associated with smoking. However, if you keep an open mind about vaping in the fact that you're going to have flavors and scents entering and leaving your breathing passages, you might like flavors you've never even thought of vaping.
I went from tobacco to menthol (a natural transition), to fruity menthol, to fruity flavors, and now I'm on decadent dessert/pastry flavors; waffles, blueberry muffin, monkey cream, monkey buns, etc. It's a whole different world. Try something that sounds delicious in your head, and go for it.
I imagine you won't regret it.