Thanks for detailed explanation on what you are trying to achieve.
- Add this to Theme Options - Other - Custom CSS
.entry-meta-bar {
display: none;
}
.entry-header {
display: none;
}
article {
background: transparent;
box-shadow: none;
-webkit-box-shadow: none;
}
.entry-content {
padding: 2% 0;
}
-
There is no shortcode for slider and it will work only on homepage. You simple need to set Featured Images for each post and use Post/Page ID inside Theme Options for slider and you are ready to go. Here is more information on how to use featured images: http://en.support.wordpress.com/featured-images/
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Here is how you can change theme color: https://colorlibsupport.com/t/how-to-change-travelify-theme-color/
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Here is more information on fonts: https://colorlibsupport.com/t/how-to-change-default-travelify-font/
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Use Custom Header Image which is created to cover the entire header width. Here is more info on that: http://make.wordpress.org/support/user-manual/customizing-wordpress/themes/custom-header-image/