Your last sentence explains where you're coming from. If your main concern is learning how something sounds, then of course a video would be more helpful. There are probably thousands of videos already out there that cover all aspects of mixing.
I personally don't find them very useful for reference. For example, say I want to know how to set an automation node to specific level. I don't want to search for a video on automation, watch the whole thing hoping that at some point it answers my question. With text, I can just go to what I'm looking for.
Fortunately, I still have the manual for Platinum. I also still make frequent use of Scott Garrigus's SONAR X3 Power. When you need a clear explanation of how to do something, his books can't be beat.