For readers and researchers who know French, the Bibliothèque Nationale has digitized and made available online all materials in the Fonds Marcel Proust, an extensive and crucial collection of Proust's original manuscripts and typescripts.
David Wesley Richardson's book Resemblance is a picture book of paintings inspired by Marcel Proust's novel A la recherche du temps perdu., and includes seventy-four characters as well as four incidental landscapes. Each painting is accompanied by a passage from the novel. The images are available online at this site.
A vast archive of biographical and historical material collected by the American editor of Proust's correspondence, Philip Kolb, established after Kolb's death in 1992. Significant portions of the archive have been digitized and are available online.
Proust on YouTube
A fun introduction to Proust's life, work, and thought from Alain de Botton's channel, The School of Life.
"How Proust Can Change Your Life," a documentary produced for BBC2.
"Summarize Proust Challenge": Patrick Alexander and other Proustians summarize the novel in less than 5 minutes.