Blog Question - How do I add images to my template?

I’ve got a blog over at blogspot and I’d like to fiddle with the pre-made template that I picked - add in a logo (it’s a fansite), and add in some pictures. [Just as an FYI, I’ve obtained official permission to use the images as long as they’re properly credited.] Unfortunately, everything I learned about HTML is mostly forgotten, and looking at the code for the template, I’m just not entirely sure where I should put in the img tags to get them to appear at the top of my page.

Anyone have any info on how I accomplish this?

Thanks!

Scratch that, after some fiddling around and brave experimentation (and a few hideous failures) I managed to work out where to put what.