• University of Maryland Extension high Tunnels and Season Extension. Contains a great deal of information, links, and articles on high tunnels. 
• Hightunnels.org’s “for growers” page has a variety of links and resources for anyone considering utilizing high tunnel technology. 
• Penn State’s Page on Plasticulture. A good place to start researching high tunnels. Contains many links, articles, etc. 
• Rutgers’ main page on high tunnels. A good place to start researching high tunnels. Contains a lot of information links to articles, etc. 
• Cornell University’s main page on greenhouses and tunnels. A good place to start researching high tunnels, contains many links, articles, etc. 
• West Virginia University Extension High Tunnels Page. Great starting place, lots of information and links to other articles. 
• Washington State Extension page on high tunnels. Contains a great deal of information on basic structure types, wind preparedness, and growing methods. Click on the “Crop Tunnels” tab to access the high tunnel information. 
• SARE (Sustainable Agriculture Research & Education) Season Extension Topic Room on High Tunnels.Another good starting point for gathering information on high tunnels. Web page. 
• “Season Extension Techniques for Market Gardeners.”  By National Sustainable Agriculture Information Service.  Free PDF. High tunnel information begins on page 12. (En Español) 
• Appropriate Technology Transfer for Rural Areas (ATTRA) - Well written, downloadable publications on sustainable farming
• Northeast Beginning Farmers Project - Online courses and video library
• University of MN AgPlan - Resources include free business planning software
• University of Vermont Center for Sustainable Agriculture
• Rodale Institute - Organic University: Greenhouses for Year-Round Food and Farming ​
• Rodale Institute - Crops for Early Season