First, check your local regs.
All good?
Start walking in the woods, and paying attention to the way the rabbits use and make trails. Easier in the winter when there is snow down.
Once you start to build an eye for how they are running and using narrow paths, then keep an eye out for predator tracks. How much work are you willing to put in, to keep the local coyotes fed? Real question, a friend of mine's kid gave up his snares over this. He got tired of being beat to the rabbits by the coyotes. Smart, them coyotes!

This was NW of Edmonton.
There are a lot of different ways to set snares. But a loop, big enough to fit your fist through, and the bottom about and inch or a bit more off the ground seems to cover the basics. Check the regs again, to see if there are wire sizes and materials specified. Provincial, different from place to place.
Hit up youtube and assorted online searches. Lots of stuff out there.
I never bothered to put out any snares, but paid pretty close attention to the runs and places that would have been good spots, while out with my dogs or out rabbit hunting in Northern Alberta. Pretty soon, you develop an eye for seeing the likely spots. Or you don't, eh? What I know for sure, is you won't get any, unless you get out there and put in some time at it.
Have fun!
Cheers
Trev