How can I open an epub+zip file on my S3? I got some files that say "epub+zip" undrr Properties and I wanted to know how can I open it?

OS: 4.1.1
You need an ebook reader that reads EPUB files. Aldiko (http://www.aldiko.com/) is a great ebook reader that supports EPUBs. Or, you could rename the extension to zip and extract the file. Inside, you will see some folders. Within one of the folders are HTML files that can be viewed in a web browser.