First things first, I got the model of my washing machine. Then I went to the Appliancepartspros.com website. I typed in the model number and clicked on the agitator picture. I watched the video and then went and took my agitator out - only one bolt. Everything was just like it was in the video so I ordered the parts. The parts arrived the next day - their regular delivery is so fast. I assembled the unit just like the video said and did my first load of laundry. It literally took only minutes!
I've used the Appliancepartspros.com videos to do other repairs. They're great!