It's a bit difficult to give general set-up advice as the environment, species and cameras vary so much. However, what I can advise is experiment where you know you will get results (a path where a neighbour's cat comes past, a bird feeder, an area baited for mice etc.). If the camera allows, try out different sensitivity and IR light settings then look at the results. The problem with setting it up in a 'wildlife' area straight away is you won't know if the camera is working, or the settings are wrong, if you get no photos.
The only other advice is be patient; it took over a week for anything to show up on one site then over the next few days/nights I got fox, rabbit, hedgehog and bats! (bright oval lights that fly past with their hot bodies showing up on the IR - totally unidentifiable!).
