Slider already available:
http://prntscr.com/tfrmgb
and it is showing more courses
Remove the post date from course carousel:
.home-page .vibe_carousel .block.courseitem.course5 .fa-calendar-check-o{display:none !important;}
----> This will remove that calendar icon
Remove Spacing Between Blocks
.home-page .taxonomy_carousel .flexslider ul.slides > li{margin-right:10px !important;}
.home-page .vibe_carousel .block.courseitem.course5{margin-right:-20px !important;}
change the px according to your own requirement
All these CSS will be pasted in wp-admin > appearance > customize > custom css