Sure... I don't know a great deal about it hears that i did.
I purchased Bitcoin through the app called Coinbase. This transaction took a week or so to complete as funds were moved from my bank account to Coinbase. As Coinbase only deals with 5-6 major Crypto-currencies to purchase other coins you need to transfer to another exchange.
I sold my Bitcoin and transferred my balance to Binance and purchased Stella.
FWIW... Since I purchased mine it had gone up over 35% and is now down about 40% from my beginning balance.
If you use your passport and take a good clear picture the process is much faster than Coinbase. Think less than 30 min start to finish.
Dont forget to use 2FA and save your keys if you do. Google authenticator app is good for this.
Coinbase and Bittrex are both US based companies, and both have good reputations regarding security.
Once you have both accounts open, buy Bitcoin (BTC) using https://pro.coinbase.com/ (same access as coinbase) if you buy as a maker there are no fees. Then simply transfer the BCN you purchased to your bitcoin wallet on Bittrex. From the Bittrex exchange buy Steller.