Ok.
Here's some quick tips to get you started:
1) Read the manual, practice playing with the settings, and watch some videos.
2) If you have a coil smaller than the 12x9, then start with that.
3) Practice in your own yard.
4) When you turn on the 540 it will go through an EMI noise reduction procedure. You'll notice that it does nothing to stop the EMI noise. Don't be alarmed at this point, because a metal detector doesn't know the difference between an EMI signal, and a signal from metal in the ground. As such, EMI noise reduction on all SMF detectors, is generally a "sham". The only way it can work, is through software trickery algorithms, that will, in one way or another, decrease raw performance...but that's another story. For the EMI noise, just reduce the sensitivity as necessary. Note that EMI noise is reduced significantly once the coil is swinging on the ground.
4) Start in "Custom Mode". If I remember correctly, it has the most discrimination for its default settings. Coin mode has less discrimination, so you'll dig more trash. Jewelry mode only discriminates out ferrous targets, so you'll dig a lot of trash. The point to all this, is you don't want to start out digging constant trash, because that will get frustrating really quick. Start with high discrimination, and then you can start reducing the discrimination at your own comfort level, based on your needs.
