The Poetry Foundation provides a biography of Hopkins, a good selection of poems, and suggestions for further scholarly reading.
A fantastic site with tons of scholarly information on Hopkins's life, religion, the social history of his times, and much more.
A short biography on Hopkins, and many of his best-known poems.
Audio recordings of thirty-three poems by Hopkins, including "Spring."
Listen to a recording the of thrush's song.
A sketch that Hopkins drew of himself.
A handwritten letter by Hopkins
A New York Times article on Hopkins's life and poetry.
An excerpt from a letter written by Hopkins, discussing sprung rhythm.