Blog Issues

So, the deal is this. I want a better template. No, I want a cool template for my blog.
I tried last night to put one on. I got it saved but then it won't let me put in my title or anything. No, I'm not smart enough to figure out how to change the HTML so that I can do that. Nor, do I want to be : )
Anyway I'm not settled on this pink deal you see now. It's a temporary fix until I get get "cooler."
Can someone help? Please?