Just to share the information of what is the largest Cryptocurrency exchanges/markets all over the world, based on the market caps and volume of the average daily transactions.
Knowing which websites/exchanges are large and widely used or reputed is the great first step to dodging off scams or the danger in which you would possibly fall into anywhere you're in the online world.
Because something used by many in wide regions can be a sign that it's at least the least possibility to falling into being scammed and it means it's kind of being trusted.