hi… i am newbie in web designing so please provide me basic term and overview of webdesign so that i could learn it.
We have a number of current threads asking similar questions. I suggest you have a look through some of them, which will provide you with more information, and links to tutorials.
http://www.sitepoint.com/forums/showthread.php?1176960-about-web-design
http://www.sitepoint.com/forums/showthread.php?1180374-I-want-to-be-a-Web-Designer-by-online
http://www.sitepoint.com/forums/showthread.php?1189575-how-can-i-learn-web-design
Our sister site, https://learnable.com/ is also a great place to learn.