You need to do one of two things to get your images and other content to appear in the right place in the epub:
1. Put all your content inline with the text. To do this, copy the object, put your cursor inside the text box and paste it. Then you can use Object->Anchored Object->Options to reposition the image where you want it.
or
2. Use the Articles panel to tell InDesign what order to output your content. When the Articles Panel is first opened it gives you a brief explanation of how to use it.
I don't know about the interactivity or how to get that to work. I've never done an ebook with interactivity. I think that requires epub 3 output though. And, it probably will require some tweaking after the fact of the XHTML and CSS files.
This is a pretty advanced project for a beginner. I suggest you sign up for lynda.com if you aren't already and take some tutorials on InDesign, epub, html and css.