usage of 'for':
1)used to show a receiver of something.
She cooked the rice for her son.
2)on behalf of
She signed the cheque for her husband.
3) in exchange for
She gave me $10000 for my car.
4)in search of
She went to Canada for good jobs.
She sailed for Srilanka last night.
This house is used for living.
7)in support of
Most members were for her and very few against her.
she lived in Canada for two years.
Student or Learner