Investing on safe investments like trading and physical bitcoins or altcoin mining in your own house or partnership with some people in some businesses that includes bitcoin.Saving would just be good if you have a stable source of income through bitcoins
If a person have stable source of income or any other way and there income is very good then they have to think for reinvestment as if they will reinvest then they will increase their earning more. This time they have to invest in any business so they will be rich with that business.