Last time the OP asked this same exact question here:
https://www.mobileread.com/forums/showpost.php?p=2145739
he was told to post it again in a new thread. This is that new thread. He was also told to supply more information, which he did not do.
In general, requests should contain enough information so that the questions CAN be answered. However, his intent is clear in this case. He wants SOMEBODY ELSE to write a tutorial for him (probably for free).
FYI: KF8 font embedding is said to NOT be supported in the kindle app that you can run on a host PC.
The question is really "WHAT TOOLS support KF8 font embedding?".
If you search "kf8 font embedding" with google, there are lots of hits:
A dedicated "kf8 font embedding" thread in the MobileRead calibre thread:
https://www.mobileread.com/forums/sho...d.php?t=184187
The amazon "Kindle Format 8 Overview" (with publisher tool download links):
http://www.amazon.com/gp/feature.htm...cId=1000729511
And even an amazon forum thread that gives a simple tutorial (exactly what you requested):
http://www.amazon.com/forum/kindle%2...x2PLUDJKNE8STF
I realize that google's "customized" search results may have given you different results, but really, it was not that hard and it should have given you SOMETHING useful. Did you TRY to "google it"?