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 use localbitcoins for exchanging my cryptocurrency to the normal currency but in sometimes it will give the confident for me to make a trust in it so that I recommend it for everyone to try this it will be very useful.