Help Adding a Picture to Frontpage

Hello,

I just started a blog today and I’m trying to figure out how to add a customized picture to a template, so that the title on my blog is all my own.

Here’s my current homepage http://www.meltingpotblog.com

I’d like to add a full color picture to the top instead of the boring and drab title that’s there currently.

Please help me, I don’t have a clue about the nuts and bolts of design and I’m too broke to pay some one to create it!