1. English

2. Google

3. Official documents

4. Technical-communities

stackoverflow.com
segmentfault.com
v2ex.com
...

5. Books

6. Blogs

1. How to use google

1. how to learn xxx

2. recommended books for xxx

3. xxx tutorials

4. simple xxx tutorials

2.How to use stackoverflow.com

http://www.zhihu.com/question/20824615