这是一部杰出的参考书与课本，尽管一开始你可能会觉得它有些枯燥或是没那么有激情。但是最终你将喜欢它的教授方法。
It is an excellent reference and textbook, albeit you may find it a bit dry and less inspirational than others at first, but you will eventually develop an appreciation of its teaching method.
本教程最重要的先决条件是通读和掌握第1部分(参见参考资料)。
The most important prerequisite to this tutorial is that you thoroughly read and work through Part 1 (see Resources).
它作为完整的小部件包的一部分，可以从参考资料一节中相应的链接下载。
It is available as part of the complete widget package that you can download from the appropriate link in the Resources section.
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