Hi Mark
I started the same way about three years ago. This is an excellent site for advise and viewing great finds. (I mostly lurk)
* Read as much as you can about the hobby. I have obtained around 7 books on ebay, and each one offers something different.
* Read your manual several times, and after you have used your unit....read it again.
* Practice, practice, practice. Don't have great expectations at first, and don't get disappointed when you are out and don't find much. It is still a kick for the "thrill of the hunt".
* Have a good set of searching gear.Gloves, knee pads,and some type of vest or tool belt with pockets are a must. A pinpointer really helps, and a good set of headphones saves on batteries, lets you hear tones better, and helps to ignore people when the need arises.
* Never be afraid of asking for permission to hunt private property. The worst they can do is say no, but if you present yourself properly, you will get many ok's. (But be sure to search following correct methods).
* There are many cleaning methods covered in most books. Depends on the type of coin or artifact.
* Google "coin shooting", "metal detecting", etc, and read everything you can for tips and information.
* Networking. Mention your hobby to friends and co-workers. You will be surprised at how many can set you up with a good site through THEIR family or friends. My wife works with a woman whose sister owns a 200 year old farm and gave me permission to search the fields, and my work involves dealing with the local Police Departments.
I just got permission to search around an old farmhouse that has been the County Police office in a park for many years, so I expect it to be "virgin" grounds.
Good luck