Like said above, the canines are tricky. I have trapped for 3 or 4 seasons and those coyotes are by far the toughest to catch. They are very smart and very wary. Coons can be easy if you have places with alot of them, and you use the right techniques.
First you need to look into your state's laws on trapping and what traps and snares are legal. Here in KY we cannot use a trap with a jaw spread of more than 6 inches on land. I have used both the Victor and Duke #1.75 double coil spring traps for coyote and fox, and the #1.5 double coil springs for coon. Honestly I would like to use the #1.75s for coon and #2s for coyote and fox but I believe the jaw spread on the #2s is too much for KY. Snares are also a good way to catch canines.
Trap preparation (dying, waxing, pan tension, swivels etc.) is important, you can find videos on how to this stuff on youtube.
I would research as much as possible, there are whole books written on it. Its alot of work, and takes some time to learn the art of it. Im in no way an expert, but I had some avid trappers in my family to help teach me, which really helped.
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