Storytelling and creativity.
List of useful resources:
Videos about storytelling and intrinsic design from Mike Hill (Youtube channel)
Comic book story writing from Daniel Warren (video1, video2)
Videos from Jake Parker:
The 8 Step Comic Writing Process
Anatomy of a Hellboy Short Comic
Creativity theory
Everything is influenced by something, original work is wrong goal, one should express himself, express his personal tastes. Everyone starts from copying others, Everything is a remix. And Meme. (and his Ted talk)