refrigerator grow questions

Ive got an old fridge in my garage that i would like to use as a space for growing some plants from start to finish, But i am having an issue with how to prep the refrigerator , Sooo im trying to find someone with some documented instructions of preperation, cus i dont know how and where to even start getting this thing ready for what id like to do, It is all for personal use but i am totally lost as to where and what to do to the thing !! If someone could possibly give me a link or some written info on how to acomplish this it would be greatly appreciated

I can provide pics of the fridge its a side by side kenmore , soooo any info would be greatly greatly appreciated