The Introductory and Intermediate Course each have a lesson on foraging and wildcrafting, which are a great intro to safety, ethics, and information on a handful of the common wild plants that foragers can look for.  The Foraging Course expands on this quite a bit with 5 substantial lessons, in-depth discussion of 23 common edible and herbal plants, and lots of recipes to try as well as tutorials on various herbal preparations! This course also uniquely includes videos to help you get up close and personal with wild plants.