Swimming Lessons

So I'm thinking about doing swim lessons with Zoey. They have summer ones starting in June and it's only 2 weeks long for 4 days a week. I would be in the water with Zoey. It could be fun. I just thought that maybe it would be good to know what to do with her in our pool instead of just floating around on a floaty. Anyone out there have experience with swim lessons? Good thing or not worth it?