Hi frank,  to run the tutorial, you will need to download imagenet dataset yourself, as we cannot upload imagenet images. The dataset can be obtained by using: https://pytorch.org/docs/stable/_modules/torchvision/datasets/imagenet.html#ImageNet 2
For the tutorial, you only need the floating point models as the tutorial walks through the process of creating a quantized model from a floating point model. The floating point mobilenet model can be found at: https://github.com/pytorch/vision/blob/master/torchvision/models/mobilenet.py#L9 2.
We will add  more documentation to the tutorial so that these steps are clearer.