My first "home" was a small below-ground field of flowers where I prayed Creepers wouldn't get me. And I survived the night, surprisingly, but I soon learned the hard way that Creepers didn't burn when the sun came up...
My first home was a house made of wood planks on a small peninsula, which after awhile I decided wood was too much of a fire hazard so it became cobblestone, and then I eventually got enough cobblestone to say, "I wanna make a lighthouse!", so the house, in the end, went as high as I could make it, and, deciding I didn't need stairs I decided to go with ladders, adding floors for no reason, and eventually I put glass at the top and got some lava and filled the glass floor with lava, in an attempt to make it look like a lighthouse.
Needless to say, once I got really far away, it didn't work. And now I can't load that world without Minecraft becoming non-responive, then it loads, then I can move for .2 seconds and then it freezes, becomes unresponive, I move, freezes, becomes unresponsive etc. etc. *cries*