Engraving has been described as "art in steel" and that is what it is. If your artistic talent is limited to rough sketches and stick figures as mine is, trying to engrave a gun or carve a stock would be pointless. If I can't draw a picture on paper, I sure can't draw one in steel. At least I can toss the paper and prevent too much embarassment; steel is permanent.
Does a community college or school anywhere around have an art class? Yes, you can teach yourself, but the results usually look like it. Learn to draw, to do scrolls and curves and landscapes and portraits, then try doing the same in steel or wood. That, IMHO, will be the easy part.