How to start learning to develop an http scraping tool
Is there some good tutorial or sample to learn about http web scraping? How to start developing a tool that can search on some web sites  and download specific information so I can collect it automatically and then analyse?? thanks!
How to start learning to develop an http scraping tool
===

Is there some good tutorial or sample to learn about http web scraping? How to start developing a tool that can search on some web sites  and download specific information so I can collect it automatically and then analyse?? thanks!