So I have totally loved Jillian Tamaki's stuff since I first found a copy of the single issue of Skim in Giant Robot in like, 2005 or something, and the finished book totally lived up to the hype. And Matt's already posted to her before, but since then she's put up one of her handouts on keeping a sketchbook from her class at Parsons. There's also one on idea generation, both of them good reads.
Also, Eddie Campbell has been posting about his upcoming Alec book on his blog, which have always been my favorite of his comics. But I've had this link saved for two years now, the first of seven posts about paper he uses, though the others are image specific, and at times things that materialized somewhere in his studio that seemed to fit the purpose.
Part 2,, Part 3, Part 4, Part 5, Part 6,Part 7