What is the quickest way obtain living expenses grant while going to college?

There is no such grant. MIllions go to school and have to work a job. I worked 35 hours while taking 14-17 credit hours a semester. I'm no where near alone on that one

There is the Pell Grant which may cover over the tuition cost. For instance, you can qualify for up to 5,000 a year, if you go to a community college for 3k a year, the rest is yours for rent, books, etc. Fill out the FAFSA.