Some of these e-books appear to be permanently free, while others may only be so for a day or two (e.g. if they are on KDP Select free promos). I can only promise that all the titles listed are available to download free of charge today!
1. Reader Magnets - Build Your Author Platform And Sell More Books on Kindle by Nick Stephenson
This highly rated guide to marketing a Kindle e-book is part of a series about book marketing titled Reader Magnets. As well as the e-book itself, you also get access to Nick's course "Find Your First 10,000 Readers" for free. That looks like a good marketing tactic in itself to me!
2. Building Your Book for Kindle by Kindle Direct Publishing
This is a free guide to formatting and publishing your own e-book for Kindle from the Amazon KDP team. It's an essential download for any aspiring Kindle author.
3. Smashwords Style Guide by Mark Coker
KDP isn't the only game in town, of course. If you want to distribute your e-book via the iStore, Kobo, Sony Reader, and so on, Smashwords provides a simple and cost-effective means for doing so. The 130-page Smashwords Style Guide by its founder tells you everything you need to know.
4. How to Write a Novel The Easy Way Using the Pulp Fiction Method by Jim Driver and Jack Davies
If writing a novel is something that interests you, this guide will give you plenty of ideas. It focuses on saving time by carefully planning and outlining your novel.
5. Make Your Book Work Harder by Nancy Hendrickson and Michelle Campbell-Scott.
This is a comprehensive (almost 200-page) guide for any self-publishing author who wants to boost their profits by publishing to multiple platforms, including audiobooks, CreateSpace, Nook/Kobo, Udemy, and more. There is also a long section setting out multiple ways to promote your book.
6. Freelance Writing Revealed by Emile Joy.
This is a well-written and inspirational guide that focuses mainly on writing for online markets. The subtitle is "How To Make Money At Home By Ghostwriting And Freelance Writing". It also has some excellent tips and advice on building your reputation, creating a good work environment, accepting payment, and so on.
7. Smashwords Book Marketing Guide - How to Market any Book for Free by Mark Coker
This is another excellent guide from Smashwords founder Mark Coker. At about 52 pages it is quite concise, but it is packed with tips and ideas for promoting your e-book, whether it is published on Kindle, Smashwords, or elsewhere.
If you download any of these e-books free of charge, it is of course a courtesy to leave a review on Amazon for the author if you enjoyed it.
Finally, all of the above are of course Kindle e-books, but that doesn't mean you must have a Kindle device in order to read them. Amazon has free apps available for smartphones, computers (Mac and PC) and tablets, meaning that the great majority of popular platforms today are catered for.
Even though I'm a Kindle owner myself, I also have the Kindle for PC app on my desktop computer. Although I do mostly read Kindle e-books on my Kindle, sometimes with non-fiction books in particular I like to see them on a full-sized monitor.
You may like to read this blog post for more information and advice about reading Kindle e-books without a Kindle.
As ever, if you have any comments or questions about this article, please do post them below.