This is where you can learn How to manage a skin. You can change slider, logo, add portfolio, use shortcodes from here.
To change image slides for the first slide edit tag to change the image name.
In case you want for example edit effects for the first slide, then you should edit this below values:
data-x="297"
data-y="140"
data-endeasing="easeInOutBack"
data-endspeed="1000"
data-end="6500"
data-easing="easeInOutBack"
data-start="500"
data-speed="1000">