Ah, so you're more a wikihow kinda of man :)
I too, prefer text and instruction manuals for doing things, but sometiems, if I'm walking or at the gym, I like having a "video" in the background (audio only) to fulfil my brain with a bit of food for thought, instead of just background noise.
Unless I'm going with someone else. Then it is conversation, and me talking into the wind so they can't hear me. I am seriously bad at conversation while walking with people, because I throw my voice to all the wrong directions, but I try.
I listen to a lot of stock investors on youtube, I rarely watch the videos, yet the information is sometimes very valuable.
But for tutorials - yes, definitely text & pictures :-D