Welcome to the forum, Lotsa help here .
A pinpointer is next on your list if you want tocut a larger plug and replace it.
This prevents you from having to rip the plug apart to find the target.
I would start with a probe and screwdriver to poke around and locate the hard target then get under it with the screwdriver and pop it up to the serface .
Test a few dimes quarters and pennies under your coil to figure out what the high conductors sound like . Be selective for now on solid coin targets wile you practice.
Hit YouTube for detecting videos and we are also here to help.
The other advise is when you buy a pinpointer buy a good one . Same goes for digging tools. I went threw a half dozen digging tools before I learned there are things made to last more then a day or week
Stop in here and give a report when you get out hunting. We love hunting reports and pictures of finds so do not be afraid to show off.
So a screw driver and prob ( kinda like an ice pick or scribe to push into the ground softly in and out till it hits the quarter.
Then get under it with the screw driver and pop it up.
No harm to the grass and no shovel needed
Good little Pouch to put stuff in and trash targets you don't want to leave laying around. Gloves for safety .
One other tip . If you can bring your coil up a foot off the ground and swing over the target and still hear it. It's likely a junk crushed can . The smaller good stuff will go away as you bring your coil up.
Dew
Thanks for joining, we're glad to have you with us. 
