I've never seen a guide on how to make trap doors, nor TNT with it. If it can be used for that, hao2make?
I will upload a picture of what you can to with Redstone.
Please wait...EDIT:
Here ya go!

The stuff on the ground is Redstone. The bumpy thing on the cobble stone is a button. Push that and prepare to hear a boom!
Also, im almost scared to go into the mine thinking that all fall into the void holes :c
Im almost sorry I even dug down there!