Hello from Eastern Ohio

I live in a small town South of Youngstown Ohio. I have made 5 trips in 4 years to the same local scrap yard. I was never one to just throw away something that has value. I have scraped TV's, Air Conditioners, computers, motors, old wire, old plumbing etc. I don't scrap to earn a living, but have enjoyed it as an interest or hobby. I have watched many videos about scraping and have learned much. I hope to learn more detail info about the different grading levels of metals to maximize whenever I do visit the yard.