I also want to join XBY but I have no idea how to put money on yobit or c-cex from my credit card

It's my first time trying to buy a crypto and I don't have BTC

Somebody help me please!
I use coinbase to purchase BTC/ETH ... if you have existing bitcoins, then shapeshift (multiple coin types available) and send your BTC to yo or cex and then purchase XBY.