Are there any example experiment files for AVA?

Yes, there are examples (with everything set up in the Apparatus and Schedule window, ready to run in demo mode) for you to refer to.

To view the examples, in the AVA software you have downloaded (which is free to download to use in demonstration mode), go to File, Open, and then C:\Radleys\AVA\Examples and select the example you are interested in.

Once you have opened an example file and then closed AVA, when you reopen AVA the example will appear in the Recent section (File tab, then Recent).  You can press the star button next to the example to save it as a favourite (so it will stay in the Recent section for easy reference in future).