In August 2019 Joyce scholars gathered at the Zurich James Joyce Foundation for the “Zerothruster” workshop which was devoted to an in-depth analysis of Finnegans Wake II.2. “Nightlessons” is allegedly one of the most obscure chapters of the Wake, but is also one of the richest, meriting a focused investigation of the episode. This volume traces its origin back to the workshop and brings together an eclectic group of Joyce scholars to examine various important aspects of “Nightlessons” from a variety of theoretical approaches including gender studies, textual genetics, environmental humanities, and digital humanities. The volume proposes to return to the essential concerns of scholarship on the chapter— the children’s lessons, the chapter’s themes and intertexts, the logic of the marginalia, and Joyce’s process— while introducing fresh perspectives that represent current scholarly trends. Challenging long-held assumptions about “Nightlessons” as impenetrable, the volume illuminates the chapter as a rich and rewarding Joycean text.