I actually download a lot of e-books over the internet. Unfortunately not all are good material and worse some are really just a waste of money. I'm writing this post to give fellow magicians advice on the things to consider when buying an e-book.
Tip # 1: Always buy from a reputable site
Buying an e-book is the next best thing on how to learn from books. Getting it from a good website and not from torrent downloads, not only supports the magician who spent time and effort, not to mention cash, in building a great website, but also protects your computer from malware and other viruses.
Tip # 2: Don't get too tempted with the "blurb"
A blurb is more like a testimonial on what the book is all about. Mostly they are true but sad to say some are really exaggerated. Also be careful when reading an e-books description, what you should look for is the content of the book. Try to look if there is a preview of the contents and if possible a description on each effect in the book. In this way you could see what your money’s worth before buying the book.
Tip # 3: Buy a book that suits your level
Most e-books on magic either teach one effect (usually priced from US$1-5) and those that teaches a lot (from US$10-20). Usually I go for the one with more material as it offers me a variety of things to learn and usually it has better effects than those that teach only one. Also if you’re going to buy one make sure that you have a good grasp of the basics in magic as most of these books expect you to know already what the sleights that are mentioned in the book.
I hope these tips help before you go purchase and e-book.