高铁。

初次接触 Node，在 npm link 部分稍微卡了一下，总体还可。

课程比想象中的略难一些，不过似乎挺实用。

不过因为忙着补功课，所以并没有仔细看辅助的材料，后面有机会再补上。

May, 2015

It’s a pity that I left my study half done in the last year.

I decided to study again and reviewed this lesson.

It took me about 3-4 hours. In my review processing, I find some mistakes that I made last year.

update at Jan 20th, 2016.