watch for them in the fields, look for sign (tracks, strut marks, turkey sh@t etc...) on the dirt roads on the property and start getting out there and listening for them in the mornings and evenings. Power lines, food plots etc. are all good areas to check also.
If you got some higher elevations on the place that you can see and hear for a little ways, go there and listen at first light and right before dark- hopefully you'll be able to find out where they like to roost by doing that.
I'd get a topo map and google earth the property if I were you also. The more you can learn about it, the better off you'll be.