Toilet vent pipe

Has anyone out there dealt with this issue?  When I flush one toilet at home, the other toilet gurgles.  After a little googling, the culprit might be a clogged toilet vent.  Is this like a chimney that runs to the roof?  How do I unclog it myself?  Could the gurgling be caused by something else?  What happens if I just ignore the gurgling?  Thanks in advance.