How to Install The Google Play Store on Your Amazon Fire HD 8
These instructions work! Hurray! I tried a while back and it didn’t work.
This tip came from my friend Tim A. He added, “I found that it seemed to stop me downloading the apks directly, so I put them on the SD card and installed them from there.”
https://boingboing.net/2017/10/11/quickly-add-the-google-play-st.html