Hard to know what my first one was, but the first I really remember was when I was learning how to drive a HMMWV at 18 y/o up around Mt. Hood. Had a washed out road with a culvert sticking into the washed out section. I carefully drove out with my left tires on the culvert, and had 3 tires touching at any given time. Made it over no problem. If I had any advice, don't be afraid to ask questions.