can you expand on why you think it would be a good resource about design ?
I read "understanding comics" a couple of years ago and while I think it's an awesome book I am not sure of why you think it's a good resource for designing stuff that is not "sequential art".
and also: you can't separate text from design (like in comics) a point that "understanding comics" makes quite clear.
and user interaction: changing from one state to the next, from one webpage to the follow up webpage is a transition, a transition like form one page to the next, also from one panel to the next - and you can determine how the users experiences the transition, like in comics you can go from one detail to the next detail, from moment to moment, from one aspect to another aspect, or from boring to surprise (or, you can even go completely dada).
"understanding comics" is not a 1:1 analogy for website/webpages, but it helps you to really understand your pages, your design and how the users experiences them.
in my opinion, it's at par with "don't make me think". i recommend reading them both at once.