You cannot catch a punt while out of bounds in the NFL.
Never . No one can go out of bounds and be the first one to touch the ball.
No. The kicking team is penalized if a kickoff goes out of bounds, but on a punt, the ball is put in play for the receiving team at the point where it goes out of bounds.
a step kick is where you punt the ball out of bounds
from the line of scrimmage to where it is recovered/goes out of bounds
No, it is not possible or allowed.
a punt may be blocked by the kicking team without penalty unless there is some other illegal act involved. As long as the kicked ball is touched prior to the blocker contacting the punter the contact is ignored. For exanmple If the punt blocker were to block the punt and then make helmet to helmet contact with the punter there would be a penalty for the illegal helmet contact but not the blocking of the punt.
Kick off out of bounds, 20 yard penalty, ball goes to the 40
Edit category This is not a basketball question. Punting is football related.
Yes the punt receiver can recover a muffed kick (fumbled kick) after signalling for a fair catch. He just can not run with the ball once it is picked up.
No. That's interference.