There are several sources for free e-books on the web. I would like to compare four of them.
Project Gutenberg (www.gutenberg.org)
PRO: It has the largest selection of old literature, with over 40,000 free ebooks available in PDF, Kindle (Amazon), and ePub (Apple) formats. The books have surprisingly few misspellings, given that they are proofread by amateur volunteers.
CON: The books often lack working tables of contents, or page breaks at the beginnings of chapters, and the books always begin and end with long, annoying licenses.
PRO: They offer many of Project Gutenberg’s books, with those long licenses removed, as well as many books from non-Gutenberg sources, for free download using Whispernet, which is the easiest way to download onto Kindle devices. You can also read them on the Kindle app on Apple devices and sync between devices.
CON: But they make no attempt to fix the tables of contents or add page breaks to beginnings of chapters.
The Apple Bookstore
PRO: This is the only source I’ve found that always makes the extra effort to assure that the table of contents works and the chapters begin with page breaks. You can also sync these between Apple devices. Not surprisingly, this is the most convenient source for downloading onto Apple devices.
CON: But you can only buy and read these books on Apple devices, not Kindle.
The Mises Institute (www.mises.org)
PRO: While the other three sources provide very few free books published after 1922 due to copyright laws, the Mises Institute has been granted permission to offer over two thousand more recent books about history, economics, and philosophy for free, in PDF and ePub formats.
CON: But if you’re not interested in revisionist history, Austrian economics, or libertarian philosophy, never mind.