Blog layout or theme

I changed the layout of this blog because I can't be able to view the Blogger navigation bar on the top. It is easy for me to sign in and make a new post when the navigation bar is visible. I still want to look around for Blogger or Blogspot themes. But I am kinda meticulous about downloading some layouts or themes on the net since virus infected my pc. I really would like to avoid doing that as much as possible. I should look for themes at blogcrowds.com and finalsense.com. At these sites, I can just copy and paste the HTML.