油:gas
做起:Actually the full structure is 从……做起
从 from,做 to do, 起 start
so 从……做起 means start from doing sth/ start from someone to do sth
For example:
学习汉语从每天学习一个汉字做起。(If you want to learn Chinese, start from learning one character everyday.)
爱护环境,从我做起。(Protecting the enviroment should be started from myself/everyone.)