Thanks Ranson, I would have to agree that observation, especially over time is a huge advantage. Soil does interest me very much. In fact, no matter where I live I'm always growing something and have compost worms and compost.
I'm glad you brought up the metal work and wood work. My job in the Air Force we do rough carpentry, fine woodworking, welding, sheet metal layout, interior finish, roofing, doors, protective coatings, drop ceilings, masonry and concrete, should I keep going? Haha
This job has provided me with the skills to build my own house. Although I don't do electrical, which would be another skill/certificate I would like to get