I think it depends on the Instructor who teaches. I have been a free diver for most of my life, started free diving aroun 1011 y/o. The fact that my instructor really took the time to make sure the class, of only 4 students completely understood the question/instruction showed me he really cared about teaching. That being said, I think I began to excel when I hit about 30 dives because I discovered the highly addictive hobby of fossil diving. So I was getting experience/ use of my "new" gear and paying more attention to how to slow my breathing so I almost get 1 30 mins at 25/30 ft. The key to me is to always be diving, with a high frequency so you are comfortable in the water as others have stated, and you get more familiar with your kit. at over 125 logged dives, I would say is nothing when somone who sold me my legend reg was 26 years old and had over 3,000 dives, lucky lol. I look forward to one day being CCR Certified and my close attention to detail will certainly help. Having a good and safe dive buddy/ dive group always helps you become a better diver. Happy diving!