The New Scientist has a series of 'newsy' stories related to genetically modified crops and food. They appear to be reasonably well-balanced and informative. Here's a pretty direct producer's perspective from the national corn growers' association. Australia unhappily goes along with commercial production of GMO canola. All you need to do to come up with hundreds of sites interested in promoting or eliminating genetically modified crops is to do a search with the keywords 'GMO' or 'crop biotechnology'.
Most sites promote a specific point of view.
Almost all of these sites have the basic story presented reasonably accurately. They all agree that ordinary plant breeding involves the transfer of genes among members of the same species, or of pretty closely related species, and that both man and nature have been doing ordinary plant breeding for a very long time. Genetic modification of crops involves transferring genes among organisms that are very different.