Wikimedia
Wikipedia: Future Tense
General discussion of how future tense verbs work in language with more specific information about English, Latin, French, and Spanish. Includes examples throughout and some links to additional information near the bottom.
University of Texas at Austin
Tex's French Grammar: Near Future (Futur Proche)
This site from Tex's French Grammar of the University of Texas is a wonderful site with clear explanation of the near future (form of aller with infinitive) with usage examples and interactive practice exercises (written and audio).