How do I activate my Orange Money?

Hello there, I'm having some trouble activating my Orange Money account. Could you please guide me through the process step-by-step? I've heard that it's a convenient way to manage my finances, but I'm not sure where to start. Do I need to download an app or visit a specific website? Are there any fees associated with activating my account? And lastly, once it's activated, how do I start using it for transactions? Your help would be greatly appreciated.