To use the different text styles, highlight the text that you wish to make bold, italic, or underlined then click on the appropriate button. Or, click on a text style button and begin to type. When you want to return to normal text, click the button again.
Click on the smiley face to see a list of emoticons that you can insert into your message.
To insert a link, press the www button. You will be asked to type in the web address and the text you want to appear underlined. Or, just highlight the text you want to be a link and click the www button. A menu will appear for you to enter in the address.