I've purchased the How To Teach Your Baby To Survival Swim Package from the Waterbaby Family and I abolsutely love it. The outline of how each skill should be taught, and when to introduce new skills is so well laid out adn easy to follow. The online platform and app make it increidbly easy to toggle between computer and phone, so you can complete the lessons wherever. There's checklists and quizes to make sure you and your little one have mastered all of the information before moving onto the next skill or lesson plan. It's really the most well organized and well thought out lesson plan I've seen.