you cant earn any bitcoin by mining with a laptop for sure but you can mine altcoins with a GPU or in some cases CPU to earn some bitcoins. For this you can use sites like Nicehash(referral link in my sig) which directly pays bitcoins for mining altcoins. You can also buy some cloud mining hashrate on Genesis mining especially right when bitcoin price is high, although its mostly not profitable. A third option is to rent rigs to mine altcoins and sell them for bitcoin and make a small profit.

In summary most mining is a zero sum game unless you have super cheap/free electricity or a pump on altcoin you were mining.