I want to learn implementation of twitter or other user based systems but how?

I want to learn implementation of twitter or other user based systems but how? My problem is, i know the language basics, i know the rules but when i want to implement i don't know where to start. For example i'm coding a site which have 2 different user type: one of them normal user others are some advanced users. advan开发者_如何学Goced users have more two links on their index page. I don't know how can do that.

I hope i can explain my problem. Any help will be great for me. Thanks.

I would recommend starting with a book on web development. A book such as Agile Web Development with Rails will walk you through creating a basic application from start to finish.