The better way I have found out there is through trading, especially Forex trading, taking advantage of the multiple brokers that nowadays are accepting bitcoin as a valid payment processor to withdraw and deposit money.
I have been able to multiply my coins x3 in few weeks, but unfortunately this is never an easy task for newbies, that usually tend to lose all of their investments quickly when they lack experience or previous knowledge.
Good point, nowadays when someone says
" How can I grow my money/coin".
Trading !! That is the best answer for that. Although it is not the only way but for me, it is the safest way. No scam, you are in control in your coin.
But it is risky also and for newbies, it took some time in order to learn trading. The fact that you need a deep understanding about the Market before you will earn a decent profit. Sometimes, you'll loose some coins especially when you are still starting. But don't worry it is part of the learning process. Dont be afraid to try until you will find your rhythm and earn some profit from it.