First, we watched the video provided on your website. We did this even before we bought the part. The video gave us the confidence to feel like we could tackle this project ourselves
Second, when we took the back panel off, we took a picture of the timer part with all the connections still attached. This would help ensure that we attached the new part everything properly.
Third, the only tool we needed was a socket set.
Last, you plugged it in to make sure that it worked before we put the dryer back in place.
Since dryers are fairly light, compared to washers, I feel like this could be a one-person job but it's always helpful to have a second hand.