if its near your original spawn, then you should make a mine shaft to get 4 iron and one redstone. then you can make a compass by putting the redstone in the center of a crafting table, and put the 4 iron ingots in a diamond shape around it. if its not near your spawn, then what i would do is try to retrace your original steps to get there, or find a nice area to make a new base.with the new base, you should make a bed by putting 3 of any color wool in a row on the crafting table, and put a row of 3 wooden planks under them. then it will set your spawn to be at that house with the bed, until you make another bed and sleep in it if you ever do make another bed.
Nothing. But you should try to find your house before it gets to dark.
Simply dig out the area underneath the house. Unless the base of the house is made of gravel or sand, the house should float when you remove the blocks under it.
There is no such thing as 'straw' in Minecraft. So you can't.
No, all your saves will stay.
There is nothing obligatory about minecraft; there is nothing you should get.
you make a house with wood dirt leavs
There is no way to do it.
You can go onto Minecraft Forums and look there but you really don't need schematics you could probably just imagine it like I do
First build the house, then empty the water with the empty bucket if you are in creative. if not, than fill the house with blocks and put a door on the entrance. then go in and destroy all the blocks. you should have a air bubble in the house.
You build your own house and you can find NPC villages in the world
you can, but if your house is in the nether, your bed will explode
Light up your house and kill all the bats.