Where can I access the Bulletproof template and how can I download it to my Blog page and make changes?

Also, I tried to add my logo by using the "HTML nugget" sidebar plugin but it didn't work for me. It accepts html text that I put in, which appears only at the bottom of the screen and not the ...

I am fairly new to Serendipity and I wanted to know if there was anyway you can customize the templates. I would like to include my logo on my blog.

Any help would be greatly appreciated!

Thanks.