In your Word document, highlight the text you would like to link.

On the Insert Tab, click the Link button.

The Insert Hyperlink Wizard will appear. You can Paste the link of the website you would like to use in the address box. 

Click OK.

(NOTE: To Copy the link of the website, right click the address bar of the site you need in the hyperlink, then click Copy from the menu. This is what you will Paste in the Insert Hyperlink Address Wizard.)

The Hyperlink has been inserted when the text turns blue/underlined. You may press CTRL on your keyboard + Click to open the link in your browser.