If you spend most of your time at home watching the tube, your chance of serious accident or injury is probably not high. But, for those of us that venture off-road in all manner of motorized vehicles, we place ourselves at some elevated risk of bodily injury. Hence, some general knowledge of injury care is wise for us.
We're traversing difficult terrain, sometimes at breakneck speeds (no pun intended). We deal with heavy moving objects, flying debris, and hot metals and fluids. Ironically though, many injuries out in the dirt don't come from vehicle activities, but can occur simply due to falls and sprains hiking over boulders, ledges, or other terrain. We face the possibility of cuts, burns, concussions, and broken bones.
Having a good basic knowledge of first aid practices along with some useful first aid items can make the difference in providing care and comfort should an injury occur. You can carry some first aid items with you at all times. At the extreme, this knowledge and preparation could save someone's life when professional medical help is not immediately available.
To address knowledge needs, basic first aid classes can often be found locally through the Red Cross or similar organizations, and are sometimes combined with cardiopulmonary resuscitation (CPR) instruction. In addition to addressing injury, the classes can help you deal with a person that may be unconscious, has stopped breathing, or suffered cardiac arrest.
Even better than basic classes is Wilderness First Aid (WFA), which is targeted to teach assessment and treatment of a victim in a situation where professional medical attention is not readily available. By its very nature, off-road travel often puts us into remote areas where an injured person might not have access to proper medical care for many hours. It's up to us to provide for the injured person during that initial period. We are our own first responders when out in the boonies!