If you want to fool around and see what you can do, use an existing HTML Practice thread, or start a new one. In threads like that, feel free to experiment with

<blink>

and

<marquee >

and whatever. I don't know what font faces are available - that would be an interesting question. I occasionaly post using

<font face="arial" color="orange" size="+4">Arial typeface</font>

but there are many others.
Try some (click).
-Joe-