Get yourself some small gold targets and attach them to plastic poker chips (don't use the fancy clay poker chips - you will find that most of the clay poker chips are formulated such that they read just like 'hot rocks' to your detector. Hot Rocks are pretty irritating, no need to make things harder).
Use the small targets to test your ground balance and ability to detect gold in your current location (ground mineralization tends to be really high in areas where you find gold - being able to tune your detector for these areas, with a known good target will help you in the long run). The reason to attach the gold to a poker chip is so that you don't loose your practice target. I have a leather cord attached to my practice targets. I use a few different sized gold targets to see how small of a target I can find in an area.
You drop these on the ground, around 18 inches apart and then try to detect them.
Bird Shot reads/sounds just like gold - if you are finding that, you are likely set up correctly (my ratio of trash to gold seems to be at least 1000:1).