Welcome, and congratulations eastend
As far as prams go, yes there are a lot! I'd recommend 3 things:
First decide on a budget (this can rule out a lot straight away!)
Second decide what you'll be using it for. I walk everywhere so wanted one that had sturdy wheels and a big basket for shopping. If you get the bus a lot go for a smaller umbrella fold. If you'll constantly be getting it in and out the car go for a lighter one that fits into your boot when folded.
Third, go try some out. Mothercare and toys r us tend to have a good selection of the more well known brands, and should let you try them in your car too.
You'll find your options narrow down quite quickly which makes it much easier 