I think this guy explain it with sticks and apples, so, get some popcorns and enjoy the video. https://www.youtube.com/watch?v=Q5hfr5poLl0

In simple words mining is the act to find a block and add it to the blockchain, the block contains bitcoin transactions, and those transactions get mined to get a confirmation. Miners get a reward when they find the block plus the fees on those transactions. Miners find blocks each 10 minutes, and now is too damn hard to find a block, so, miners search for blocks in groups called mining pools.