You start by walking out your front door. There's always something there, it's just a matter of finding it.
I made this image on Wednesday night, standing in my driveway. The tree is on my front lawn. It was a very foggy night, which created the streaks of light.
First, you have to think about what it is that you are hoping to get. Not specifics, just general.
Do you want images of birds, then go somewhere where there will be lots of birds. Nature trails are good, since the birds tend to be used to people, and you can get a little closer.
It's a tough question to answer, mostly the answers are so simple when you think about it. Pick your subject, and then go to where your subject is.