What is the app to buy and sell Tron?

Could you please explain to me what application is commonly used for purchasing and selling Tron? I've been hearing a lot about this cryptocurrency and am interested in getting involved, but I'm not sure where to start. Is there a specific platform or mobile app that's popular and reliable for Tron transactions? Could you also mention any safety measures I should take when using such an app, given the risks involved in cryptocurrency trading? Your advice would be greatly appreciated as I navigate this new territory.