hello chongruk welcome to wikipedia you might find these links helpful how to edit a page how to write a great article naming conventions manual of style you should read our policies at some point too if you have any questions see the help pages add a question to the village pump or ask me on my talk page i hope you enjoy editing here and being a wikipedian you can introduce yourself on the new user log you can find lots more information including open tasks and daily tips at the community portal you can sign your name using three tildes like this if you use four you can add a datestamp as well before saving a page it's a good idea to use the show preview button to review your edits also consider writing a summary for each edit again welcome mar utc