Swiper config is at the bottom of the Javascript window in the jsfiddle (loop mode, loopedSlides set to 3, slidesPerView set to 1) Click the right navigation arrow twice to swipe forward to slide 2.

CSV means comma separated values. It's like a normal "txt" file with commas at regular places to separate some values. Typically the first line of CSV file is a "header", containing names of columns ...