One of the biggest mistakes that beginners make whenever they are using a metal detector is going to be wasting all of their time digging up useless junk. If you just follow some very wise advice though, you will definitely avoid this. This might mean asking some people that are more experienced as well as making sure you use a good quality detector.  When shopping for detectors, you want to consider one of the big 4 – Garrett, Fisher, Minelab or Bounty Hunter metal detectors.  Using a better quality detector will enable you to hone in on treasure more easily as the sensors in these units are more finely tuned than in cheaper detectors.