Yes be careful with new exchanges, some of them only wait for big deposit to steal that money, and some of them only want to record your user and passwords, is insane the amount of people using same
users and passwords between exchanges sometimes same as email passwords and users, be careful, never never use the same user/password between exchanges, use firefox to store your passwords or
some password manager app or program.

If you want to try new exchanges, send money buy coins and store in your pc, remember back up your wallet dat file.