ganesh chaturthi

you can know about the stories on lord ganesh here. :)
Lord ganesh is the god who is worshipped first.He is called with different names.His vehicle is rat.He is called vighnaraja because he creates obstacles if we worship other gods first without worshipping him.Therefore he is always worshipped first.He is also called vighnaharta as he is very well known for warding off the obstacles of his devotees with his trunk.
His head resembles to that of an elephant and has a human body.This god has got 32 forms.He is the son of lord Shiva and goddess parvati.