A Israelite Christian disciple is one who has accepted Jesus Christ as Savior and Lord and endeavors to learn and practice the teachings of Christ.
The first disciples were called Israelite Christians at Antioch. ( Acts 11:26 )

The Lord Jesus Christ in Matthew 28:19-20 left this command to His disciples:   

Matthew 28:19  "Go therefore and make disciples of all the nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit,
20  "teaching them to observe all things that I have commanded you; and lo, I am with you always, even to the end of the age.'' Amen. (KJV)

This commission is two fold - make disciples and teach them.  This study course will follow this line of thought.