Thank you for your posts!
I see that you were able to successfully redeem your registration code in VitalSource. There are a few ways to access the eBook:
1. Access your eBook online by logging in at https://bookshelf.vitalsource.com, and then clicking on your book in the list.
2. Download the bookshelf app on your computer or mobile device from here: https://support.vitalsource.com/hc/en-us/articles/201344733-Bookshelf-Download-Options
I recommend the second option, as the online access only lasts for 1 year. You will be able to download it for as long as you have a VitalSource account.
Please let me know if you have any questions. Have a great day!