I am a former securities regulator, registered stockbroker, and consultant with an expert-level knowledge in the use of Microsoft Excel, Word, and PowerPoint. I have an undergraduate degree from Stanford and an MBA from Wharton.
You can buy any of the listed books in ebook format here or they are also available on major retailers such as Amazon, Barnes & Noble, Apple, Kobo, and Google. You may also be able to request them through your local library.
If you'd prefer to buy print versions of these books they can be found for order on major retailers such as Amazon, Barnes & Noble, and Waterstones.
Store-specific links are available on my website.