Altcoins are the best option to more in the short time so that is why i prefer to invest in altcoin, You have good option to more from digital world is earn from Bitcoin and Altcoins also.
what's the key things to know if the coin is real?
You need to consider the project that gave birth to the coin in the first place and the team members. This is your better chance to knowing if a coin will really make some waves in the long run, most especially if you are planning to keep for the long term. A working team will always make the improvement on the coin to be worth investing and then most definitely as it stays relevant, will always grow.