AGA or AGI?
Both are somewhat associated together. For $35 a year, you get a magazine that I have found to be informative. They offer courses at a decent price.
But, if you are interested in becoming a gunsmith, I suggest attending a school.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)