Maybe iFixit has updated the page since you wrote this. But the answer to both of your questions is in step 17. The link to the page for applying new adhesive and screen installation. And the link directly to the Google USB driver. One-click, download. Unzip, right-click on the .inf file and you're installed. The link to the Google fingerprint page is there, with instructions on how to boot to fastboot mode.

Maybe iFixit has updated the page since you wrote this. But the answer to both of your questions is in step 17. The link to the page for applying new adhesive and screen installation. And the link directly to the Google USB driver. One-click, download. Unzip, right-click on the .inf file and you're installed. The link to the Google fingerprint page is there, with instructions on how to boot to fastboot mode.

Jon, the comment immediately above mine is incorrect. You do NOT need to replace the new fingerprint sensor with the old one. It's built into the screen. I don't know how you'd even do this. The iFixit page for the screen itself, as well as the instructions above, and so many commenters, all point out that the fingerprint sensor will need to be recalibrated after replacement. As others noted, make sure you've got the Pixel USB drivers installed and that Windows can see your phone. Do the screen replacement as described. Then go to the pixelrepair.withgoogle.com page, shut down the phone, reboot in fastboot mode and install the calibration software. It's all there on the Google page. Once connected, it took about 5 seconds for Google to update/calibrate my sensor. I booted the phone, logged in with a PIN and then tried several apps secured with fingerprint. They all opened like normal. I was able to fingerprint back into the phone. It works fine.