Once the download is complete, simply double-click on the downloaded file to launch the SkyDrive installer. Follow the on-screen prompts to complete the installation; when you're ready to configure your SkyDrive account, go ahead and launch the program. The first time you launch the SkyDrive app, you'll be asked to sign in to a Microsoft account. If you don't have one, you'll see a link to sign up for free; go ahead and set one up now, since you'll need it if you ever install Windows 8. Sign into SkyDrive, and a group of folders will be created on your system--any time a file is placed into one of these folders, it will automatically be synced to Microsoft's servers, provided an active Internet connection is available.
SkyDrive offers users 7GB of storage space for free; you just need to download the app and sign up for a Microsoft account. If you want (or need) more space, Microsoft offers different levels of additional storage for an annual fee. At this writing, 20GB of space is available for $10, 50GB for $25, and 100GB for $50, annually.
If you want to access data stored in your SkyDrive account on your tablet or smartphone, the free SkyDrive app is available for download in almost every platform's respective app store. SkyDrive is available in the iTunes store for iOS-based devices, in the Google Play Store for Android-based devices, and in the Windows Phone Marketplace for Windows Phones.
Touch the Sky(Drive) from any device
Now that you've set up a SkyDrive account, actually using the service is simple. If you're running Windows Vista, Windows 7, or Windows 8, your SkyDrive folder will appear in File Explorer; on Macintosh systems, they'll appear in the Finder. By default, inside the parent SkyDrive folder, the app creates three more folders--Documents, Pictures, and Public.
Anything placed into these folders will automatically be synched to Microsoft's servers when a connection to the Internet is available and the SkyDrive app is running (it runs automatically with the OS). When a file is dragged into one of these folders, the SkyDrive icon in the system tray will report the status of the synchronization process and report "SkyDrive -- Up to date" when the sync is complete. Once the sync is finished, the files are stored on Microsoft's servers and will be available to other devices.
Using SkyDrive on mobile devices like smartphones and tablets is equally simple. Once you have the app downloaded and installed, a SkyDrive icon will be available in your list of applications. Open the app, sign in, and your SkyDrive folders will be listed along with some details regarding their content.