Some other handy tricks.
If you're having no luck finding a part, in the main screen hit F7 which will bring up a description search box. You can only have one word in each box.
Also part codes and sections should stay the same between models. For instance, an air filter part number will almost always start with 16546 and be in section 165, not matter what vehicle. So if you're using it regularly this can be a faster way to find what you need.