If you are new to boxing, footwork is essential.

There is ladder drills and it’s good for speed, shadowboxing to glide like a pro, and pivot steps good to dodge those punches.
Also, it's important to keep your hands up and always move your head. Don't just stand like a statue.

Those are the essential drills and defensive strategies for a newcomer.
What’s the #1 drill that helped you? I need to hear your tips too?.