Slideshow help needed!

I am very new to this so Im sorry in advance if the question is stupid – I have a million questions actually – I dont understand any of this and I need help!

I used to write for a site where we used slide shows. All you had to do to make a slide show was use the “page break” button to make a new page or slide – so I got the plugin “Paged Post Slider” and it works great at first – but then when I preview it there is a “next” button and it says I am on page 1 of 6 but it won’t transition to the next slide when you hit next!!! It says it hasn’t been tested to use with 4.0 but is there a version or another plugin where I can just use “page break” to make a new slide?? Or is there another problem I need to fix?? I haven’t published the slide show yet but my site is http://bbstmlb.com (it says to include a link! lol) So please if anyone gets all this stuff … could you please help me? Thank you!