Mapster, nothing to be embarrassed about
I'm happy that you're enjoying the games and that you figured it out
If anyone else is lost in the mines, first you flip the switch on the faaaar left of the tracks at the top (I think it's green?) and then there is another one on the furthest right of the tracks down at the bottom (down past the big walkable area with doors and such, I think it's not-green?). After you flip those two switches, there is another funky looking switch on the wall in the middle of the walkable area, next to a sign (which I'm sure it blue. The switch, not the sign. Okay, the sign is a grey tablet which was carved by Dwarves with special tools hundreds of years ago!) *cough* Once you flip that, it will open the door below.
Down in that area, there are three colored buttons at the end of tracks, if you simply push the minecarts (by hitting the enter/space key), it will send the minecarts down the tracks and on top of the buttons (you'll hear a neat metal-ish ca-chunk sound), then walk back up and into the upper-right corner of the room, the door to the big boss will be unlocked.
Inside that room, there is a nice little oasis which will replensish your HP/MP. You'll want to save your game before checking out that plant. Really. The boss is quite mean