Let's add a lines using "HR" - horizontal rule:-


Make the text BOLD or use BOLD

Make the text ITALIC or use ITALIC

Make the text BIGGER

Make the text SMALLER

Make the text A DIFFERENT STYLE
(NB: This depends on the fonts you have installed!)

Make the text ANOTHER COLOUR
(The latter is more controlled as it uses hex RBG)

Remember, this is good to learn but as soon as you understand it all, think about using style sheets.
(CSS Tutorial to follow)