I love Amazon. I wrote books for them. They then invited me to write apps for them. After quite a bit a learning, I did this. Occasionally they invite me to offer offer other products in my (their) store. I think about that too. My products are available worldwide at a touch of button.
Too bad they don't sell much. I have a few more ideas on apps but I put this aside for a rainy or snowy day. Today its nice out there. https://www.amazon.com/s/ref=bl_sr_mobile-apps?_encoding=UTF8&field-brandtextbin=Znidarsic%20Science%20Books&node=2350149011 Frank Z
