In the article 50 Totally Free lessons in Graphic Design theory the TutsPlus family definitely delivers with a bevy of knowledge building lessons in theory.
50节图形设计免费课程将教授你大量的理论知识。
Knowledge about design elements, such as color and composition, is vital for graphic designers.
有关的设计元素，如色彩与构图，的知识是重要的平面设计师。
Armed with this knowledge, I have used the command to create the graphic below.
用这知识武装，我已经用了指令来制作用图表示的下述内容。
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