How to get TFuel on theta wallet?

As a cryptocurrency enthusiast, I'm curious about how one can obtain TFuel and store it securely in a Theta Wallet. Could you please elaborate on the steps involved in acquiring TFuel and then depositing it into a Theta Wallet? Is there a specific exchange or platform that is recommended for purchasing TFuel? Additionally, are there any security measures or best practices I should follow to ensure the safety of my TFuel holdings within the Theta Wallet? I'd appreciate any guidance you can provide on this matter.