Only a handful of coins to get into which any sort of real track record,
and worthy of support, Bitcoin, Litecoin, Ethereum.

Cheap coins only means you can buy lots and lots of them but the
three above in time wiill give the best reward IMO.

With the cheap coins you will have to be very lucky to earn what you
think or hope you will earn or maybe to be lucky to catch a  Pump and dump.