Dillard's written a book about writing called The Writing Life. The author of this review generally likes Dillard's work, but not this book. Read the review and decide whether you'd like to pursue The Writing Life further. (Free registration required.)
This page contains the citation for Dillard's Pulitzer Prize, which she won in 1975 for Pilgrim at Tinker Creek. Do you recognize any of the other names there? How would you find out more about them?
Has reading Dillard sparked your interest in nature writing? Want to do some research on the field? This page of nature links is a great place to start.
Interested in pursuing the mystical and spiritual aspects of Dillard's work? This essay from CrossCurrents.org examines her writing in the light of “ecotheology” and is well worth a careful look.