How do I check my Exchange Server?

Excuse me, I'm a bit new to managing my own Exchange Server and I'm wondering if you could help me out. Could you please guide me through the process of checking my Exchange Server to ensure it's running smoothly? I'm particularly interested in knowing if there are any tools or methods you recommend for monitoring its performance and identifying any potential issues. Additionally, I'd like to know if there are any common issues that I should be aware of and how to address them. Your assistance would be greatly appreciated.