The first horizontal navigation bar comes with a dropdown menu, below it you can add your blog title and also display an ad on the right. While the second menu bar shows social bookmarking icons linking to your respective account, and also includes an internal search box.
The main slider can be modified from Design--Edit Html, and look for this code -
<!-- begin SlideShow Here -->Simply change the image url, add your post links and title and save the changes. To display more slides, copy the above code and repeat the same steps. The image size should be 960x300.
<img alt='#Title' class='slider_image wp-post-image' height='300' src='http://1.bp.blogspot.com/-Df816GBRK3g/TZb34xF1aUI/AAAAAAAAEvw/LTHbrE0Leug/s1600/Spiderman%252BWallpaper%252Bphotos%252Bimages%252Bstills%252Bpictures-4-960x300.jpg' title='#Title' width='960'/>
<img alt='#Title' class='slider_image wp-post-image' height='300' src='http://2.bp.blogspot.com/-mvVFo9oMj_Q/TZb4NzZuqrI/AAAAAAAAEv4/Bq_ZJpzblF0/s1600/HortonHearsAWho534051_1280_960_1152x864-960x300.jpg' title='#Title' width='960'/>
The single sidebar can be utilised for placing sponsor ads, labels, archives etc. The template is available in different versions - Download the Shadow Blogger Template