The First thing you do is

>Get 8 logs or more<
>Create a wooden pickaxe mine some stone and coal<
>Create a house (if you dont have time stuck your self in a cave and make an opening to see if the sun is up and place torches to see if theres some ores)<
>Kill some sheeps and collect 3 wool for a bed while in nighttime<
>If the sun rises make a mine and collect some more stone until you find a cave or some ores<