In order to buy star atlas crypto coin, you will need to first set up a digital wallet. You can do this by downloading a digital wallet app on your smartphone or computer. Once you have set up your digital wallet, you will then need to purchase some Bitcoin or Ethereum. These are the two most popular cryptocurrencies and they can be bought on exchanges such as Coinbase or Binance. Once you have purchased some Bitcoin or Ethereum, you can then use this to buy star atlas crypto coin on an exchange such as Bittrex.