Welcome to the Forum and good luck with your new machine + stick with it!
You pick a top of the line detector, with top of the line features/abilities that need to be learned.
I started out about 6 months ago with a Minelab X-Terra 705 (mid range machine). Never doig any metal detecting before, I was a little overwealmed and can only imagine how you feel. Some tips?:
--Read the manual
--Dig everything. You'll soon figure garbage from good (you'll get sick of digging garbage and start learning what garbage is)
--Air test indoors. is it as accurate as outside? NOPE! but it will give you an idea how the F75 reats to differnet coins, just, bottle caps, siler, gold, etc.
--Create a 'coin garden'. bury some stuff and see how you do going over it the readouts, like an air test, but outdoors in reality.
--Ask questions, it's amazing what you will learn.
I upgraded my X-Terra 705 about a month ago to an E-Trac with about $1000 in coils/pinpointers/etc, and I am kind of starting all over again...relearning.
Why am I on the F-Series page? I have a Fisher F2 as my back-up machine. I use it when I am off and the day may call for rain (I'd rather toast a $200 machine than a $1500 machine). The F2 is a great little machine and in my opinion best bang for a buck, and if the other F-Series detectors are like the little F2? they must ROCK! I run the F2 as hot as I can for where I am detecting and it is amazing!
I am thinking about getting a new F75 LTD and running two main machines (E-Trac/F75LTD) and getting an AT-Pro as my back-up for rainy days....
I don't know the F75 well, but I am sure it has some good stock-coin programs and you just have to #1 not give up, and #2 learn the machine.
You are very lucky to start off with such a great machine on that price-point., and as I learned from my 705, practice and when it starts clicking, you will definately have the 'bug'.