Welcome to LQ, hope you like it here.
Per the LQ Rules, we're happy to assist if you have specific questions or have hit a stumbling point. But you should let us know what you've already tried and what references you have used (including class notes, books, and Google searches where applicable) and we'll do our best to help. Also, if this is (part of a) homework assignment keep in mind that your instructor might also be an LQ member. Next to that asking a question the polite way should not start with "I want" (since you can't demand anything) but "please help me with". Finally, since you didn't post any helpful details I suggest you start by reading How To Ask a Question