This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
First step is to pick a framework. Are you going to use Spring MVC, JSF, Struts 2, plain servlets? Once you've picked one, you design which classes go in each layer. Or follow a tutorial if you literally have no experience in this area.
And a tip: "sir" is a term that only refers to males. In a forum, anyone could answer your queries.