I chose each of these sites because I have used all of them in the past as a secondary text book essentially to help me complete assignments for this class.
The first one is linked because our professor recommended it on our Project Guidelines and it has been referred to throughout the semester.
The second one is helpful just because it helps give a basic encylopedic explanation of what graphic design is and helps out line the basics of elements principles and the subject as a whole.
Third was presented because it is a great tool to help with color coding in HTML design. There are so many different colors and a correspondingly large number of codes no one could memorize them all. This site helps by providing those color codes through a color wheel while also allowing the user to select a color and then chosose an option that would allow them to choose a complimentary color.
The last link is just a website that help me with what I could not understand in the text book or some creative coding that was not included in the book. It's a pretty basic website but still useful.