At the very beginning of bitcoin it was very easy to mine it at home using just a standard PC. In 2011/2012 it was easy to mine BTC on CPU. Then the difficulty was higher and mining moved to GPU.
If you want to mine bitcoins in 2016 you need to have very expensive ASIC hardware. But it is also possible to mine BTC at home, without any hardware! You can easily buy an cloud mining contract.
Cloud bitcoin miners are easy to set up – all is done through the web panel. You can adjust the desired hashpower for both sha-256 and scrypt mining hardware.
You don’t need to care about the equipment, maintenance and electricity bills. Just open your online bitcoin miner’s web panel and watch bitcoins coming into your wallet.