I'd learn how to build a test garden just to learn what happens when you make an adjustment on ANY of the faceplate buttons. How do things change when you adjust the THRESHOLD, DISC, or SENSITIVITY? In other works, learn how to set up your machine for regular hunting (like at a park), deeper hunting (max sensitivity and minimum or NO DISC, and cherry picking (lay some coins on the ground, turn your disc ALL the way to the right and see what happens). Your machine is adjustable for a reason.
I use a cheap ($26) digital recorder for questions I want to ask here on the forum (no more notepads and pencils for me!). I usually get these questions WHILE DETECTING. Pay attention to those who have Cibola listed in their avatar and send the PM's (private messages) with your questions. That's where it really pays to be a member here!
1. learn your machine (by learning how and when adjust)
2. time spent in the field (for me it was about 100 hours...surprised me how much I learned when I thought I knew it already) because your coil HAS TO BE ON THE TARGET to find it!!!
3. making the decision to dig...now I know you have a DISC button and it will knock out some trash but...how greedy are you? Every time you say, "I'm tired of pulltabs...." you're also saying, "aaand some gold rings."
Of course, there's lots more tidbits like 1. keeping the coil on the ground 2. go slow...this ain't golf 3. overlap your swings at least 50% and more stuff like that but you'll pick that up.