You can use online exchangers to buy or sell cryptocurrency. a lot of them. Therefore, study the conditions of each exchanger to choose the best one for yourself.
The easiest way is to use online exchangers. In order not to waste a lot of time searching, you can use the BestChange service. Here https://www.bestchange.com/visa-mastercard-usd-to-ripple.html you can quickly find an exchanger for buy ripple and any other cryptocurrency
Hello, I bought myself a cryptocurrency on binance com https://tradersunion.com/brokers/crypto/view/binance/, a safe and normal platform, I bought myself Ethereum, and they say that shortly it will grow very much!