Help w/ CONTACTS

[SiTuMai]

Hi everyone. For some reason all my contacts were duplicated on my phone. I want to organize my contacts by merging all the similar contacts together, unifying people's emails, phone numbers, etc under one name.

I was told to sync my contacts onto Gmail and organize it there, however, I'm having trouble finding out how to do that. If you could tell me how to get my contacts FROM my phone TO my Gmail, it would help so much. (Or an easier way to fix my contacts.)

THANKS!!!