With each DVD you will get some sample projects, color grades, and tons of supporting material to help you get started very quickly. It certainly adds value to the package, offering you some looks built by professional colorists.
These are both DVDs you will watch again. I think it's impossible to glean all of the information off of them in one sitting. The more you repeat, the more you will memorize. Especially with the Basic Training, it is good to practice those interfaces and steps that you are going to repeat from project to project, no matter what the style.
It's easy to say that $70 is definitely worth being able to understand a program you already own. You will certainly notice the difference in the quality of your color corrections. The Advanced disc is $100, but you save $20 by buying them together. I would definitely recommend buying them both. Once you get through the Basic Training, you will start to look for further information which can help give you what you need to build the looks you want…there are so many advanced tweaks that you will learn and important information that any budding colorist would need to put a finish on their projects. The way I look at it, film school is $35k a year at least. If you spend $500 on a few good training packages that help you become a better filmmaker, you're ahead of the curve by a good margin.
I've always wondered about Color, and, regrettably, it took me this long to really try to learn about how it works. But some people need a comprehensive training program they can use at their own pace in order to truly make the leap. If that's what you're looking for, this it it.