The Fall Feast of the Lord final episode future worship in the Kingdom

Today we go over the last chapter of Zachariah and show that the feasts are not specifically "Jewish" and will be observed by all saints in the Millennial Kingdom as well as forever. Why not start learning how to observe them now?
Is there a difference between a "Hebrew" and "Jew?" Why would I as a Protestant want to learn about the Feasts?
Restoration Scriptures 7th edition, Set-Apart scriptures can be found here: https://www.rstne.com/overview.html#/