The 1# concern for Bitoin investors is safety & security. Last year alone, hackers have stolen over $100 million in Bitcoins and altcoins!
When you sign up to a site like Binance, you need to protect yourself with 2FA. It's an app on your phone that generates a code for you to login. It refreshes every 30 seconds, so no one can ever guess what your code is.
To learn more about 2FA, please watch this video
By the way, if you have not registered for Binance , what are you waiting for? The Bitcoin madness is getting crazier day by day. Hurry and sign up before they close down registrations forever.