I made an account especially so I can ask you this. I haven't watched ALL of Syndicate's The Minecraft Project, so I don't know if he's the one who's done this and you've copied it, or if you gave this in as some sort of special bonus. I was extending the house towards the pumpkin farm, and found a secret staircase which was hidden underground which lead to a railtrack. That railtrack took me to a whole new village with docks, ships, many little huts, etc. I'm gobsmacked at this revelation!

ive downloaded it, what do i do next?

is this for 1.6.4 or 1.7.2 ???