Buying/Selling Cryptocurrencies

[Massimo480]

Hello beautiful Linus Tech Tips community & how is everybody doing!

 

As you will be able to tell from my question in a moment, I am not expert when it comes to Cryptocurrencies. I have trades stocks and done well, but I've never bought/sold Cryptocurrencies. 

 

Now, if I were to purchase Ripple and decided to sell it the next week for instance, can I just unload/dump it like a stock, or does there have to be a Seller wanting to buy my Ripple currencies?

https://coinmarketcap.com/all/views/all/

Ripple has the 3rd largest Market Cap, and its value is below 25 dollar cents. 

 

I understand there are different sites, like online stock brokers, that will allow you to buy/sell Cryptocurrencies, but I don't seem to find one that sells Ripple and has an actual phone # to call. 

 

Thanks in advance.