First, welcome to the forum and hope you have fun here.
As Tim said, the Classic 5 is a good detector for the money and will do all that some of the big boys can do when you learn the detector. Depending on the area and the amount of electrical interference where your hunting, you may not be able to run with as much sens. as someone a county over, but you just need to turn down the sens to better hunt your area.
If there is one tip that will get you the most from your detector it is to not use it like a grass whip and over lap the sweeps by at least 50%. The field down at the bottom of the coil is small, like maybe only 2" so by not overlapping you are missing almost a foot of ground and going by chance that you'll get the coil over some coin that is shallow.