Having met nearly all of the people involved in making this CD, I must say that it is extremely disappointing--they have more interesting stories posted for free on the net.Most of what is contained in this CD can be found in greater detail in product manuals--in other words, stale. Furthermore, there is information I would classify as misleading and even dangerous in some cases. This CD is an impressive example of how to use Shockwave Macromedia, but lacking in substanceThe products recently available from gue.com, such as "Getting Clear on the Basics: The Fundamentals of Technical Diving" actually cost less and are far more appropriate for those looking into technical diving.