Please help me I have a few questions : 1.how do you get the 3rd and..

Iya. I've got the answer to all your questions. :]

1. For the 3rd mine, you need to get to the bottom of the 2nd mine, it's 255 floors, when you have got to the bottom, Gutz will just pop up and say well done but theres no prize. And then go back at 9pm-10pm and then you'll unlock the 3rd mine which is 999 floors long. Then when you've got to the bottom of that, Gutz will do his thing again, then go back again then unlock the 4th mine. Which is 65,535 floors long. So, good luck. :]

2. You goto his crate in the Inner Inn on a day beginning with 3 or 8 or ending with 3 or 8 so the 3rd, 13th, 8th, 18th... Etc. :]

3. The inner inn, it's near the blue bar where Muffy and Griffin are.

4. You can't, a Sprite called Jackie will never let you leave, Forget-Me-Not Valley.

Hope that helped! :]

Ok
1. to get the 3rd mine you have to reach the bottom of the 2nd mine same with the 3rd to unlock the 4th.
2. van comes on days ending in 3 and 8.
3. go upstairs in the inn. Go straight up and turn left until you get to the orange box. Van stands there.also if you search the north side of the box(top) you will find jet (sprite)who will sell you some things including records.buy five records and get jupiter(also a sprite)
4. Sorry I don't know!
Have fun

You can get to the third mine once you've made it all the way to the bottom of the 2nd mine. The 4th won't open until you visit the 255th floor of the 3rd mine, and then kill all the monsters on the last floor of the 3rd mine.

2. Van sets up shop on the second floor of the Inn (hotel). There is an orange crate up there- he'll stand behind it.

4. You can't visit another town. If The mayor asks for a diamond, get one in the mine, and then HAND it to Thomas at 5:00 when he comes to pick up your shipment. Don't put it in the bin.