Probably by referral, if the organization wants to remain secret.
Added: In the case of organisations like the Masons, you can apply online and they operate more like private member's clubs.
they don't.
You don't...they're secret.
Join and you'll find out.
Is there a government? Yes. Are there societies that have secrets. Yes. Are there secret societies. No. If we know about them they are not secret. Are there people in the government that belong to certain fraternal societies. Of course.
type "/join undergroundlab"
George L. Hunt has written: 'Secret societies' -- subject(s): Biblical teaching, Moral and ethical aspects, Moral and ethical aspects of Secret societies, Secret societies 'Secret Societies (Eagle Books)'
Some secret societies have been thought to have practiced ritual abuse. Secret societies may compete for members with other established organizations. They therefore may offer something different, like wealth, power, fame, sex, drugs, security, the promise of salvation or eternal life. Secret societies within exist established secret societies
Secret Societies - 2007 was released on: USA: 15 June 2007
Arthur Preuss has written: 'A dictionary of secret and other societies ..' -- subject(s): Secret societies, History, organization, Societies
Jon Rappoport has written: 'The secret behind secret societies' -- subject(s): Miscellanea, Secret societies 'The Ownership of All Life'
The function of secret societies was to give punishment to the people and to keep the civilization running smoothly.
Total Onslaught - 2004 The Secret Behind Secret Societies 1-11 was released on: USA: 2004