Cleaning spree on May

After my father's death a year ago his house has been quite a disaster. I never thought we are going to need this much cleaning but here we are after I tried WD-40. My late father had WD-40 laying around before but I always wonder what it does. He used to do all of these "tricks" now I have to take over. Like he was a fan, now I am one too. I clean the laminated windows which the pattern are unable to be seen due to thick debris and oil stuck on it, a wok that rusted out for being exposed for too long, kitchen exhaust fan with a generous build up and store door hinges making squeaky sound. All of them seem like it's going way too well while incorporate WD-40 together. Nothing to complain right here just a happy cleaning spree.