Since we're discussing databases...is there any "golden standard" learning resource/introduction to PostegreSQL? As a college student, I do not have much experience with them yet but I am aware of how important it would be to be comfortable with them in your day to development. Something tells me that my usual approach of diving in and tinkering by building out an idea wouldn't serve me as well for db's; it just seems to me that there's some fundamental database concepts that I would be missing if I went down that path.

Any advice as to where to start a structured approach to learning about databases would be highly appreciated :)