Open the file; it will automatically save to the Books app. On Android: Use Google Play Books or the Moon+ Reader app.
If you find a site promising a "Direct Download" or "Free PDF/EPUB" that isn't a known retailer or library: Download The Soul Never Forgets Georgia Cates epub
These files often contain scripts that can infect your device. Open the file; it will automatically save to the Books app
Use the Send to Kindle service. Amazon now supports .epub files directly. Open the file
You don't always have to pay to read. Use these resources to borrow the epub for free: