The tips include book suggestions, and a detailed list of which products do and do not contain genetically modified ingredients. The list includes everything from meat and dairy, to boxed foods and fresh produce.
There is also a lengthy list of processed food ingredients which contain hidden GMOs. Some examples are artificial sweeteners, food additives, oils, and protein powders.
Knowledge of what's really in your food is the only way to protect yourself from these harmful ingredients, until labeling laws get passed. The Right2Know GMO march is underway, with the demand to pass GMO labeling laws.