Robert Morrison's new edition is a good place to start exploring De Quincey.
Robert Morrison is Queen's National Scholar at Queen's University, Kingston, Ontario. He is the author of The English Opium-Eater: A Biography of Thomas De Quincey, which was a finalist for the James Tait Black Prize. His annotated edition of Jane Austen's Persuasion was published by Harvard University Press. For Oxford World's Classics, he edited De Quincey's Confessions of an English Opium-Eater, as well as his three essays On Murder. With Chris Baldick, he co-edited The Vampyre and Other Tales of the Macabre and Tales of Terror from Blackwood`s Magazine in the same series.