To create a link from within your page, be sure you are on the Edit tab of your page.
You will see the Body box with all of your page's content in it (or an empty Body box if this is a new page).
Highlight the text you would like to use as the link.
Now select the Insert/Edit Link button.
This will bring up the Insert/Edit Link dialog box.
Enter the website address of the page you are linking to in the Link URL box.
Click the Insert button to complete the linking process.
Your linked text will turn orange, indicating you have correctly inserted a new link.
Create a Link Within Your Drupal Site (Internal Link)
With the new Drupal websites, it is quick and easy to create links within your website and there is no need to go through the external linking process.
Be sure you are on the Edit tab of your page.
You will see the Body box with all of your page's content in it (or an empty Body box if this is a new page).
Highlight the text you would like to use as the link.
Now click the Linkit button.
After clicking the Linkit button, a small dialog box will pop up. In the Link To field, begin typing the name of the page you would like to link to. This will populate a list of possible pages. Click the desired page from the list.
After selecting the desired page from the list, the page will be automatically inserted into the Link To box. Finish the link insert process by clicking the insert button.
Your finished internal link will look the same as external links.