A collection of free online resources for learning Ancient Greek.
A Digital Tutorial For Ancient Greek: Based On John William White's First Greek Book, Created by Jeff Rydberg-Cox, Classical and Ancient Studies Program, University of Missouri-Kansas City. good online exercises, using examples drawn from Xenophon's Anabasis.
Learn Ancient Greek - Collection of free Ancient Greek textbooks.
Spiphanies: Audio Resources for Ancient Greek.
Elpenor: Bilingual Anthology of Greek Literature.
Memrise: Ancient Greek flashcard courses.
YouTube: Learn Ancient Greek, with Prof. Leonard Muellner. Center for Hellenic Studies.
Free online texts
New Testament Greek Vocabulary: biblicalgreek.org
See also the Tom's Learning Notes Greek Literature category