Hold a small amount of BTC, larger amounts of ETH and use the ETH to fund lots of small investment eggs into ICO's is my advice.  Generally only invest money you can afford to lose as its all risky but the rewards can be massive.  Find someone to help you with the technical side if you need it, as a small mistake can mean you lose everything.  Security is paramount.  Go with investments that make sense to you, so take the time to read the detail of the business you fund. 

Good luck with it!