1). Mostly Wood and Planks but also some Cobblestone
2). Not realy but sometimes I can fall into a lake of lava
3). I can hug a Creeper as I am their Lord but they dont like it so as soon as i hug him i move out of the explosion area.
4). It's not unless you have a mod that lets you or you're on creative.
5). No i mine around it and then mine that just to make sure there is nothing dangerous underneath.
6). Not yet but i think the roof would just collapse unless you also use sandstone.
7). When i started playing MC, yes i did try to make a wooden armour.
8). Didn't get what u meant.
9). Yes i know, it is a modification which you can add to your game.
10). Obviously not.