Slideshows

Echoing Mylenium - AE is great for making cool content, lacks any way to create interactive content like this. You'll need to look at other apps for the capabilities you're asking for. 

AE is not an interactive authoring app and nor a slideshow tool. If at all, you'd use Animate, but quite generally this is one of those "Why even bother?" things. There's a gigazillion free slideshow generators out there from image converters creating bundled packages with their software as players or animated GIFs to web sites creating such stuff just by uploading your images into a premade JavaScript applet to e.g. a video player like VLC also loading images and being able to do a slideshow to of course things like using PowerPoint. AE would seriously be the last tool on my mind unless the slideshow needs to have fancy animation in some form that goes beyond simple fades and wipes that can be calculated on the fly as the other tools do.

Mylenium