I now have $ 500 in capital. Is this the right time to hold the coin. and what kind of coin should I hold? I need some advice now, Because according to my judgment this will be the momentum for altcoin to explode in the end of 2018
The choice for you now is small, since the bear market is still present, then it is worth choosing only stable coins, and not reacting intensively to each correction. It can be a monero or ether, eos or nano.