which was his directorial debut movie?
"Following"
Christopher Nolan
Nolan released his first feature, "Following", 
when does the new dunkirk film come out 13 July 2017 what is the film about? It  depicts the Dunkirk evacuation of World War II. where was it filmed? Dunkirk, Dorset, United Kingdom, Rancho Palos Verdes, California, United States. who was the producer of the film? Christopher Nolan when was he born? Westminster, London how did he start his career? Nolan started working as a script reader, camera operator, and director of corporate videos and industrial films.
wiki:13513551
Christopher Nolan [SEP] 1998–2003: Breakthrough
In 1998, Nolan released his first feature, "Following", which he wrote, directed, photographed and edited. It depicts an unemployed young writer (Jeremy Theobald) who trails strangers through London, hoping they will provide material for his first novel, but is drawn into a criminal underworld when he fails to keep his distance. From Nolan's experience of living in London and having his apartment burgled, he observed that the common attribute between larceny and pursuing someone through a crowd was that they "both take you beyond the boundaries of ordinary social relations". Co-produced by Nolan with Thomas and Theobald, it was made on a budget of £3,000.