Some people suggested to mine altcoins what does it mean how can I do mining for altcoins.In present days what mining is good to earn profits.I listened bitcoin is tooooo hard.If we want to mining bitcoin is 50GHZ/s is enough and what about 0.075 TH/s?
You should research this subject on Google... Some of the algorithms of altcoins are different too.
And yeah difficulty increased a lot to make it almost impossible to profit from BTC mining so Altcoin mining is probably the premier solution for now.