First off, Freemasons are NOT a secret society. Idle minds and ignorance paints them as such.
If you are 21 years of age, believe in god and are of reputable character and background, then you can seek out any Freemason and ask them about
becoming a Freemason.
You will require 2 sponsors and you will need to apply. You will be investigated and vetted and if found suitable, you will be initiated on a regular
emergent night like anyone else who has become a Freemason.
It's not for everyone and if you don't like being in the fraternity, you can ask to be demitted and that's that.
There are plenty of other groups as well and I would imagine they would all have their own guidelines for membership as well. I wouldn't count on
being recruited. Freemasons do not actively recruit anyone. You must request and you must join by your own free will.
2b1ask1
I'm certain a few members here are Freemasons already. Perhaps if you know any of them personally, you could ask?