You should distinguish between design skills and tool skills in your quest for learning. To draw the parallel with the technology world - knowing IDE well does not make you a good programmer nor computer scientist. So being skilled with Photoshop or Illustrator won't make you a good designer.
It's essentially like Graphic Design 101 the modern way. It would be a good start towards more specialized learning towards interface design, user experience design, information design or data visualization disciplines.
In my opinion the good introduction to basics of graphic design 'seeing' would be this book: http://www.amazon.com/Graphic-Design-The-New-Basics/dp/15689...
It's essentially like Graphic Design 101 the modern way. It would be a good start towards more specialized learning towards interface design, user experience design, information design or data visualization disciplines.