I was ondering if someone has pics and step by step on putting the stock eaton off and clean all them oil build up in there?

Is this a complex task or should I just let the shop do this?

Sorry, newbie here..........Just 3 1/2 month old owner.......
I brought the L used and got about 20,000 miles on it
but I just added the CAI,4# lower pulley, SCT MAF, and SCT tuned and dynoed. but I see oil dripping from the throttlebody and wants clean the inside

thanks