All images below are linked to Books2Read which should do geographic-specific links and, after you’ve used it once and if you choose so, go directly to your favorite ebook store. If they don’t work, use one of the store-specific pages instead, but I’ve yet to have problems with them.
M.L. Humphrey: Amazon US Author Page
Excel Essentials Quiz Books
Regulatory Compliance Essentials & Data Principles
Mail Merge Essentials
Budgeting for Beginners
Easy Excel Essentials
Easy Word Essentials