Once you locate it then in <img alt=' section copy & paste the address of the image you want and in the title section change it to the title of your image.
And if your image is from a post or you want to link your image on the slider to a particular post then in <a href=' section copy & paste the url of the post you want to be linked,so that when you click on any pic on your slider you are directed to a post which is linked to the image.
This is how the html of my blog template looks like,u can refer to it for more clarity.Or you can check my blog to see how the slider looks like finally after changes made in the html.

I have the same problem, i can’t change pictures in the slider and put some of mine!
How does it work?? Thank you!!!