You can invest in mining. It is highly profitable but there is a snag there which is you have to get a reliable manager to invest with. About 98% of them are scammers only about 2% are actually mining and will send returns. Do your research and find the few and invest. You can also have a look at
www.grossbyte.com.
mining is now no longer promising, with the current market conditions, the expenses needed by miners will be greater than the mining revenues that are made.
For me it is good to use any of way to increase your money as crypto currency is promising as investment, as trading and mining too but the problem is only that mining is a little expensive otherwise there is no side effect. I would like to recommend you to invest your money in bitcoin as it is the most promising coin which gets high in price faster than all other altcoins.