It is better to buy the bitcoin and HODL. Given current situation in bitcoin world it is better to remain observer. There are no much reliable opportunities in bitcoin world when it comes to investment.
Yeah its difficult to find good place to invest bitcoins but to buy bitcoins he also need capital as price is not too low and it won't be possible for everyone to invest that huge amount in buying bitcoins so if he don't have money then he can start earning them.
Finding a good site for investment in bitcoins is a really difficult task. I have one real investment site which is paying me in real. Rest i have tried few and they all scam after a month or so.