It seems that all the cloud mining services are scams. They charge an upfront fee to join, and then sell you hashrate which they claim mines cryptocurrencies, however it is just a ponzi scheme using the funds that new members put in to pay small amounts to those who refer the most people. Invariably ponzi schemes such as Nexusmine, Cryptoluc, and Startminer all end badly with people losing lots of money.
If you do want to mine crypto using your laptop or gaming PC I highly recommend Honeyminer. It is easy to set up and actually does what it says it is doing!