Hello Chalermkwan13, and welcome to the Simple English Wikipedia!
You may begin by reading these:
For some ideas of pages to work on, read Wikipedia:Requested articles or the list of wanted pages.
You can edit any pages you want! Anything you write can be changed later. You can ask questions at Wikipedia:Simple talk. At the end of your messages on Talk pages, please sign your name by typing "~~~~" (four tildes)
Good luck and happy editing! ♠Chocolates♠ 04:53, 19 November 2008 (UTC)