There are three modes of browsing the verses of the quran
At any point all the words in verses displayed can be clicked on to display it's roots and linked words
Click on chapters and then select a chapter number from the list
Click on any word in a verse and then choose browse word from the left hand navigation
Click on any word in a verse and then choose browse root from the left hand navigation
Click on Roots and then select a root from the list displayed on the left
Enter a word in English or Arabic, click search
Locate word of you were looking for and click on it. This will display all occurances of words on to left side.
Click on the form of the word you wish to look for in the Holy Quran. This will display all verses in the Holy Quran.