To join a secret society, decide which one you want to join, fulfill the eligibility requirements and follow the instructions to be inducted. Eligibility varies from secret society to secret society, as do induction and invitation traditions.
The Hidden Brotherhood secret society allows anyone with a brave heart, daring spirit and desire to change his life to become an active member. Whereas, the famous Skull and Bones secret society requires you to attend Yale University and be "tapped in" by an older member. Membership is associated with elite pedigree, such as being a descendant of the Bush or Vanderbilt families.