Invest your money in trading if you want to get a good profit, and don't play gambling or invest your money in gambling because it is risky and winning chances are very less. And one thing more don't invest your all money in trading too because it is also little bit risky.
Yeah invest part of it in trading and rest save it for future, so even if your trade goes wrong your saved bitcoins will help you in future.
yes I think trading is currently the best way, many new coins are born, you can take advantage of the new coins and invest in ICO. but you should still be careful and choose a nice coins.
For me ETC is the best altcoin at a moment, I already double my coins in last one week, and I am still playing with it on daily basis, but not sure how long it will survive.