If you're not a fan of the Dropbox file-sharing service, you should be. ANd Joe Kissell's latest ebook, the $10 "Take Control of Dropbox" (http://tid.bl.it/tco-dropbox) can help you get up to speed.

Whether you're already among the millions of people who sync and share files with Dropbox or you plan to join their ranks soon, Kissell has the real-world advice you need to go beyond the basics. He shares the best practices for using Dropbox effectively and securely on your own or with a group, explains how to avoid common mistakes and irreversible settings, describes what's involved with mobile devices and Dropbox-savvy apps, and tips you off to unusual uses of Dropbox.

Among the advice in the 82-page "Take Control of Dropbox" includes info on how to:

° Recover an accidentally deleted or revised file. You'll find help with a few non-obvious controls and a discussion of the Packrat option for Dropbox Pro users.

° Work with photos and videos in your Dropbox folder and learn how to share collections with Dropbox's new photo album feature.

° Use Dropbox to store and automatically sync data used by Dropbox-savvy apps on all of your devices, whether they're running Mac OS X, iOS, Android, Windows, or Linux. You'll get a better idea of what's going on behind the scenes and how to manage app authorizations.

° Check a few important account-related details to make sure you're set up optimally. These include security settings and methods of getting more storage space.