You can make your font do many things. Some commands are listed below:
< b > this makes the text bold (thick), end it with < /b >
< i > this makes the text italic (slanted), end it with < /i >
< u > this make your text underlined, end it with < /u >
< br > this makes your text have a line break (it's like using enter but in html)
< p > this start a new paragraph which is very useful for splitting up your text.