Minning of crypto currency can be very lucrative if it is allocated time and done with the right tools. You do not have to spend a lot or break your spendings on a tool in order to start. A laptop of up to 265 GB ssd ROM and 8 gig ram with a core I5 should do the magic for you especially when you are just starting out. You will earn enough and go for a more faster and efficient one later on.