To make a effective start push, you need to know how to dupe (see Rhinomeat's dupe 
glitch) First, toggle difficulty to Peaceful. I know that it may seem nooby, but this
toggles on the "creative". Now, get 19 logs. Put 3 logs into crafting, and make 12 
planks, craft 4 to a workbench and on workbench, make a chest. Put the chest down and
start duping the logs until you have two stacks of 64 of those logs. Easy as pie, now
make a nice little set of tools, and get some cobblestone, dupe it again and build a 
nicer little stone house. Now do something better on it, and then you have a shelter.
Do what you want with it.