How Can U Get Into The NFL If U 16?

First you need to hire yourself an agent.  This is someone that will represent you if a team decides that they want you.  Your agent will negotiate a contract for you.  Plus unless a team signs you directly, you would have to go through a college drafting system.

You have to stand out in the crowd,have a degree,skills,natural ability,and attract the scouts so they will approach you with possible contracts and then you look them over/with counsel/family/lawyer and decide if it is what you want.talk to other professional players.unless you want to be on the sidelines then become a doctor of sports medicine,sportscaster,become rich and own the team of your hearts desire. Just some ideas

You have to first on an accredited football team that is in a High School for starters and then you have to be drafted, recruited, and/or picked by the NFL once you get to college grad levels. Normally NFL selections are scouted out in high school, followed onto college and then they are normally selected and/or chosen for NFL teams.

You can not  get in the NFL at age 16.

The earliest you can get in is 18. And it takes lots of work.

Buy a ticket. LoL...