Is there anything else that I should know  how to operate an ATV on a private land?
after getting the permission, you should not drive your ATV beyond the boundaries of the property and respect andy restriction or request from the owner. You could lose your permission to ride on private property by littering, causing damage to the property or driving carelessly.
What should I do if I have an accident with my ATV?
In case of an accident, you must give your name and address, and the name and address of the ATV owner and its plate number, to any injured person or the owner of any damaged property or the police. You also must show the proof of insurance to the person claiming to have suffered damage or injuries.