A bit of history of what form the natural gold was found in the area will help, or if there was silver there too. If the gold was fine placer, your detector may not find it easily. If it was tied up in sulfides, then no detector will find it. A lot of gold specific detectors can find rice grain sized gold, as well as larger. Expect lots of iron/steel trash if it was worked by miners in the past.
There are very few places that have Gold and don't have mineralization (hot and cold rocks), some are far worse than others.
Get yourself some practice targets (tiny pieces of gold that are glued to a poker chip - you want to be able to find them again pretty easily) to work with in your own yard and then also bring those with you to test the ground you are hunting on - they will help you get more comfortable with the mineralization, and allow you to be sure that you can at least find your practice targets out in the field.
If you can't find small targets when there is little mineralization, you won't find anything of value when there is a lot of it.
I have seen different sized gold / plastic poker chip practice targets for sale on eBay.com. Stay away from clay based poker chips - they tend to behave just like mineralized hot rocks to your metal detector.
Don't forget to bring a gold pan - You may find some pay streaks with your detector that you want to process with the pan.