[header] How to be eligible to get into the nfl [title] Join your high school football team. [step] Playing on your high school football team will increase your experience and your exposure. College football coaches (and nfl recruiters) are more likely to take note if you do well in high school football. 
Recruiting can start as early as freshman or sophomore year, so try out as early as possible. [substeps] If your high school does not have a football team, transfer to one that does or join a club team.