The seed is called: kendoll - this is for POCKET EDITION ONLY
Step 1: Get Resources
First get some wood to make a crafting table, make some tools
Step 2: Start Mining Down From Spawn
Dig straight down from spawn point first you will find iron then you dig down a lot more and eventually find 5 diamonds dig more around it and you will find coal, iron, redstone, and some lapis.
Now to get back up jump, place a block repeat that till you reach the top. Then you can make a house, nether reactor.