Good morning Eliza.
Dads 7000 - youre very lucky
The 7000 is actually pretty simple with some basic settings covering a good range of targets.
Ground Mode = Difficult.
Gold Mode = General.
Audio smoothing = Off.
Sensitivity = turn it up until the Threshold gets scratchy and turn it back 1 or 2 points.
Noise cancel the machine.
Ground balance the machine in Semi-Auto over the Ferrite with the Quik Trak button held in. After it makes no noise over the Ferrite you could then pump the coil a few times without the Quik Trak button held in.
Difficult/General will get very small targets right up to the ounce plus stuff at depth.
Using High Yield will help on the very small targets.
Normal will help on most targets but also may increase the ground noise you hear and drive you balmy.
The mineralisation of the ground you are working and the general size of the gold in the area will dictate your settings choices but the combo of General/Difficult is a safe place to start and will handle mineralisation, ignore most hot rocks and provide a good coverage of different sized pieces of gold at different depths.
And dig everything unless you are over a rubbish dump!
Hope that helps and best of luck :Y: