There are hundreds of Bitcoin exchanges which anyone can sign up for and start buying Bitcoin quickly and effectively. Personally, I use Gemini or Kraken. Gemini has an excellent interface and low fees, while Kraken offers some of the best crypto assets and is one of the oldest exchanges in existence.
The real question is... What is your favorite Bitcoin exchange?
i have several exchangers that i randomly visit to look for possible trade such as idax,bitmart and kucoin
but i do my daily trades normally still on Binance aside of all the hack issues