I am pretty convinced that there is a tutorial out there for anything that you could possible want to learn. They may not all be good tutorials but piecing a few confusing tutorials together you can probably accomplish your mission.
I started this blog with pretty limited html knowledge and every time I learn something new I feel so proud of myself, even if it took hours to do! So three tutorials and a lot of trial and error later I introduce my button! Snag one for yourself.
Cool, a Gauge Wars button on your blog is.