You answer:

Hello, I think that the basis of trading, is the purchase of this very cryptocurrency. I think there are no specific methods to buy cryptocurrency. You can use exchanges, exchangers and different services for this action. Personally I use https://j2tx.com/buy-bitcoin/immediate service to buy cryptocurrency. This service provides buying cryptocurrencies with credit cards, has perfectly simple interface, understandable even for newbies, and most importantly - it has favorable commissions.