What About Using Goggles?
It is rare that someone would ask whether they need to use swim goggles or not, when coming to swim lessons. But it has happened.
The short answer is: Yes, you should use swim goggles.
Goggles will enable you to see what you are doing underwater. Sight will keep you safer and more comfortable. And goggles will protect your eyes from the pool chemicals.
With regards to what kind of goggles you should use, you may view Choosing Your Goggles to get some ideas.