The materials are 2 logs, 3 wools (any color of wool and any type of wood will work). Start by making wooden planks by going to your inventory. Then make a crafting table with the 4 wooden planks, and place the crafting table down tap on it and turn the other log into another 4 planks, also you will only need 3 wooden planks. Now if you have 3 wool and 3 wooden planks go to the crafting table by tapping it and search bed then tap the green rectangle with the bed on it to receive your bed. Hopefully this can help you.