Add Yahoo as a preferred source to see more of our stories on Google. We've all been there, right? "Oh, I just need to find a stud to hang a picture." And 15 holes later, you're convinced the wall is ...

Q: I need to install shelves in various rooms. I was given a stud finder to help determine the best places to hang the shelves. For the life of me, I can’t figure out how to use it! Any advice? A: ...