Read this Comprehensive Guide first.
How should I use an iPad or other tablet during a Party?
Go to Facebook in Safari or Chrome instead of the Facebook App.
Official Facebook Instructions – Viewing Facebook Events
How do I view my upcoming events and invitations?
How do I export my events to another calendar?
What are suggested events and how do I remove them?
How do I see the events a friend is going to?
Official Facebook Instructions – Responding to Facebook Invitations
How do I change my RSVP to an event?
How do I turn off notifications for an event?
How can I block event invitations from a specific friend?