Python：

https://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000/0014316090478912dab2a3a9e8f4ed49d28854b292f85bb000

 

SQL:

https://www.douban.com/note/617721112/

https://www.sqlteaching.com/

 

Linux:

https://www.cnblogs.com/xjxz/p/6520373.html

 

Python 爬虫：

https://blog.csdn.net/sunnyxiaohu/article/details/50787430