Some of the benefits of using Google Calendar...
It automatically integrates with your Google Classroom so it helps you keep track of assignments, appointments, classes, etc.
You can set reminders for yourself for important events and deadlines
You can set up Zoom meetings
This video shows you how to set up a Google Calendar and add events
Instructions from Google itself!
These can help you set up templates that you can use for recurring events to save you time when you're filling your calendar out.