A disciple is an adherent to the teachings or words of a famous person. Our God -Yahuwah and his son-Yahushua are the excellent and famous ones of Israel. We are their disciples if we remain in the things they have revealed and taught to the sons of Israel. These things are written down in the bible for us.
You can become their disciple by reading, studying, researching out the words of our God and his son and by observing all they have commanded must take place.