This last section contains helpful information on how to promote environmentally sustainable industries in countries outside the United States. It will be useful to NGOs or industries trying to implement these practices. There are other beginners' guides tailored to specific groups, such as teachers. Beginners Central is a site that has won a number of awards and good reviews. Many sites have information about several categories, so be creative in thinking about what other categories might apply to your interests.
Links often change as their owners move files around their computers.
This will move you to a level higher in the server's directory, which may solve the problem. If that does not work, keep deleting all characters after the slashes, working your way up to the main domain name from its end. If the main domain name does not work, check back in a few days as it may be under maintenance. You can often email the webmasters to find a particular page on their sites. The number of sites listed in each section was deliberately limited to those that best fit these criteria.