There are many resources online and in print. This is by no means a comprehensive list, but hopefully a launching pad for some very useful website and books. All of these examples provide code in same shape or form.
This is a list of most of the data sources used in this course.
This is a list of quantitative courses commonly taken by students in the Graduate Group in Ecology at UC Davis. For those of you taking the course in person, these are classes you may end up taking in the future that will put your new R skills to use.