Knowing Mandarin pronunciation is absolutely essential, and it's the first thing you should focus on when learning Chinese, or any language.
If you learn how to identify and produce all of the sounds in Chinese from the start accurately, it will pay huge dividends in the long run.
There is a lot of material on pronunciation both online and in among native teachers that range hugely in quality and price. Most people just get a tutor when starting out, who tend to brush over pronunciation too quickly and teach it using boring and repetitive drills. If you try to teach yourself by researching online, you will find an ocean of low-quality, often self-contradicting information, the accuracy of which you have no way of discerning.
We decided to create our very own live course that includes everything one needs to know about mandarin pronunciation explained using clear language and beautifully edited presentations. We researched very heavily, sifted, filtered, separated the wheat from the chaff, and systemized a course suitable for any level.
Then we tested it. Oh boy, did we test it. We spent a combined five years teaching it live and online to over 250 westerners. In this time we perfected the structure, presentation, and support materials of the course to the point that could be considered almost obsessive, until finally transforming it into an 8-hour video course.