To begin writing simply type. In order to bold the sentence you simply click on the bolded A in the tool bar. When you have finished bolding the text that you want all you have to do is click on the A again. In order for you to italicize the sentence you click on the italicized A in the tool bar. When you are finished you click on the A again.
Underlining information is also very similar.
The underline function is located to the right of the italicize function. Changing the font size is also very easy. Just click on Format at the top of your screen and go to Font after you have highlighted the text, or before you begin writing. Once you get to this point all of your font style options are given. Pick the style that you want to use and then the highlighted material changes to the desired font, or the next material written will automatically be written in this font.