How to make a simple compost bin

Today afternoon Mr Nidoo showed us how to make a simple compost bin. First he said that worms don't like citrus and also worms like dark places. First Mr Nidoo grabbed two buckets, one with holes and one with no holes. He said that you had to put the holey bucket on the bottom, then he grabbed food scraps and threw it in the bucket. After he just grabbed a handful of bokashi mix and threw it in the bucket, he told us that this mix will take the smell away.  After that he told us, this is how simple it is to make a compost bin.