Simply visit the FBI website. There are a number of different "agent" type jobs available. There are some minimum qualifications and training programs. https://www.fbijobs.gov/11.asp
No you can not become an FBI agent when you have gone to a juvenile facility.
they would become an FBI agent because of there income or probably they would just like to protect their community
YES
No.
Be very inteligent
No FBI Director has ever become the US President, nor has any FBI Special Agent become the US President. President Nixon applied to become a Special Agent but was not accepted for this position.
no because i happen to be one its not that bad
All FBI agents are required to be US Citizens.
That is not a requirement.
You can go to any college that has a degree in justice and if accepted into the FBI you would go through their training before becoming an agent.
Of course - many already have.
You probably need decent grammar :)