Here is a link to a good Seed Starting Fact Sheet
Here is a link to a GrowOrganic.com video blog about seed blocks.
Coleman, Eliot and Barbara Damrosch. Four Season Harvest: Organic Vegetables From Your Home Garden All Year Long
Coleman, Eliot. The Winter Harvest Handbook: Year Round Vegetable Production Using Deep Organic Techniques and Unheated Greenhouses
Ann Owens, our Sophomore Greenhouse Manager, recommends the following books, (though none are primarily about greenhouse cultivation):
Knott’s Handbook for Vegetable Growers (5th Edition)
Bug Off by Jerry Baker
Grow It by Richard W. Langer
Organic Plant Protection (Rodale).