I am a new here. I would like to improve my word power but I am not sure there are pages that I can practice in here. I wanted to know how and where to look for, if someone can point me out the links.
Thanks in advance.
You can try looking in our testing area at http://www.usingenglish.com/testing.php
There are quizzes and exercises there which you can use to help you improve your vocab and use of English, and if you sign up to the members' area (it's free) you can get access to many more!
I'm not a teacher, so please consider any advice I give in that context.