Play around with it at home. Use coins and junk items ie pull tabs, screw caps,foil, twist tops and coke cans eta. Put them on the ground and see where they show up on the screen and what they sound like. Pinpoint off the 12 o'clock position of the inner coil.
Above all, have fun, let your curiosity get the better of you and a touch of patients helps in the early days, as you are learning something new. Also, digging up junk is part of the hobby, so don't get frustrated when you see the glossy pictures of lots of finds and no junk. We all dig junk, we just don't show pictures of it. Over time, as your skills get better, you'll leave more junk in the ground.
All the best.
Mick Evans.
P.S. As you get better with the Ace, we can tell you a few more of it's secrets (it has plenty to tell), but I don't want to give too much information in one hit as you will not be able to assimilate it all right up at first.