Actually, I am working on a project. I want to extract all the reviews from a website which has reviews related to movies, for example. I want to make an automated system which can extract the content of the website and save it to a file. That will be my data-set for the project on which I am working. For example, take imdb. I want to make an automated system which I will run and that will extract the content(reviews by many people) of the website and save it to the file for further processing. I hope I am clear what I am asking. I just want the point from where I should start. What should I read and how to start? No codes or code snippets I am asking. Thanks in advance.

If you are coding for windows then you might start with it's WinINet Functions.

Like...
InternetOpen
InternetOpenUrl
InternetReadFile

etc...