1. Login to Blogger > Select Blog > Design > Go to Edit HTML > Expand Widget Templates.


2. Use CTRL + F to Find this code : 

<div id='slider-wrapper'>

3. Change link and images you want.

<b:if cond='data:blog.url == data:blog.homepageUrl'>
<div id='slider-wrapper'>
<div id='slider'>
<a href='#'>
<img alt='' src='https://lh5.googleusercontent.com/-fBi7ZyQ_A_g/TudH1PC5yfI/AAAAAAAAANo/hcPaG3ocBJA/h1600/slider-1.jpg' title='#slide-caption-one'/>           
</a>

<a href='#'>
<img alt='' src='https://lh3.googleusercontent.com/-PalTsW5GaL4/TuduUy2gupI/AAAAAAAAAOI/sr2r5MIIklU/h1600/slider-2.jpg' title='#slide-caption-two'/>            
</a>

<a href='#'>
<img alt='' src='https://lh5.googleusercontent.com/-zj1KtYqb_P8/TudmW2RCv6I/AAAAAAAAAN4/L4bF0DZdVCs/h1600/slider-3.jpg' title='#slide-caption-three'/>            
</a>
</div>

<div class='nivo-html-caption' id='slide-caption-one'>
<h1><a href='#' rel='bookmark' title='Slide Title 1'>Slide Title 1</a></h1>
<p>Aenean quis facilisis massa. Cras justo odio, scelerisque nec dignissim quis, cursus a odio. Duis ut dui vel purus aliquet tristique.</p>
</div>

<div class='nivo-html-caption' id='slide-caption-two'>
<h1><a href='#' rel='bookmark' title='Slide Title 2'>Slide Title 2</a></h1>
<p>Morbi quis tellus eu turpis lacinia pharetra non eget lectus. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Donec.</p>
</div>
                    
<div class='nivo-html-caption' id='slide-caption-three'>
<h1><a href='#' rel='bookmark' title='Slide Title 3'>Slide Title 3</a></h1>
<p>In ornare lacus sit amet est aliquet ac tincidunt tellus semper. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas.</p>
</div>
</div>
</b:if>

4. After found all link you can change link, images and description
