Ive been wanting to be a linebacker in football for some time but dont have a clue about it, Can you tell me what it is? 
Well, they are part of the defense and their job is to line up three yards behind the line of scrimmage, behind the linemen and back them up.
Oh ok, That sounds tough. Are there a lot of injuries with being a linebacker? 
Yes because they tend to hit hard during running plays.
Ouch, thats a part of what scares me about some positions in football. Is there more than one linebacker on the field at one time? 
Yes, especially when a blitz is called because they act as an extra pass rusher..
Oh ok, Can you tell me what Blitz is? Is that another field position? 
No, that's when the defense tries to sack the opposing teams quarterback.
Oh got ya! Well is there anything else I need to know before becoming a linebacker that would help me? 
You definitely need to have good judgment on every snap, so you know what needs to be done during a particular play.