Buy The Book

If you have a preferred ereader device or application, buy Side Effects from the corresponding ebook seller:

Kindle device or appbuy from Amazon
Ibooks appbuy from Apple Ibook store
Nook device or appbuy from Barnes & Noble
Adobe digital editions app  buy directly from author

E.g., you cannot buy from ibook store and then read your purchase on a kindle. Here's my advice on the best ereaders.