So you wake up and you are on top of a tree in a void and you don't know where to start. Remember this is minecraft, first thing open your inventory then you punch a tree, but be careful and thoughtful about your punches. remove as little as possible to get 2 logs. make a crafting table and a crook. punch one more log and place it in the leaves above you to prevent leaf decay and gather the rest of the logs. make slabs and create a platform with the slabs, I usually go bottom slabs to prevent spawning. once you have a platform use the crook to break the leaves. Plant a sapling and twerking and repeat until you have enough wood and silk worms. remember if you make too many slabs but still need planks you can turn slabs back into planks. Make an oak barrel and compost saplings or leaves to make dirt. the grind and expand your platform while your dirt is composting. add more dirt and plant more saplings on the dirt. plant and grow a tree and use a silk worm on the leaves and let them infest the tree. once fulling infested use the crook to break the leaves to get string. now craft a sieve and mesh. start to sieve dirt to get more items. Use the pebbles to make cobblestone and then a furnace so you can make charcoal. make an oak crucible and put leaves/saplings in to get water. make a hammer and break cobblestone to get gravel, gravel to get sand, and sand to get dust. Make the tinkers tables and use gravel to get flint so you can make tinkers tools. use dust in the oak crucible full of water to get clay. you can now make a clay bucket. get two buckets of water to make an infinite water source. Water can allow you to travel below your platform and built lower levels. expand your platform so you can build a dirt area that you can stand 25+ blocks away from. plant so grass seed on your dirt to allow passive mobs to spawn. make sure to light it up or hostile mobs will also spawn. Speaking of hostile mobs. do a similar area for hostile mobs, but remember to design it for hostile mobs. Sieve dust toi get 7 bonemeal or use the mob farm. use dust with oak crucible to get clay and make porcelin to make an unfire crucible, fire it and then place it over a torch. add cobblestone so it will turn into lava. use the lava and water to make a cobble stone generator. This should take you through the wood age.