PushBullet is hands-down the easiest way to get files, links, notes, lists, and addresses from your desktop computer to your mobile device. After having used it for a couple of days, I can confidently say it has changed the way I interact with my phone for the better. Perhaps it will do the same for you.
To get started with PushBullet, simply install the app and pick the Google account that you prefer to use. Next, go to PushBullet.com on your desktop and use the same Google account to log in there. It's important to note that you can set up PushBullet on as many Android devices as you need, and from your desktop, you'll be able to easily choose which device you want to push data to. In fact, with PushBullet's latest update, you can even push items to the Android devices of your friends (so long as they share access with you) and vice versa. All of this is done from the PushBullet.com Web interface. Once you set up PushBullet for yourself, you'll see how easy it all is. There's even a Chrome extension available for added convenience.
After you install the app on your mobile device or devices and log in from your desktop, you can start pushing text notes, addresses, lists, files (up to 10MB), and links immediately. From the Dashboard page, just pick which device you want to push to and choose a data type from the tabbed options. From there, all of the controls are intuitive. There's a file browser for pushing files from your desktop to your phone, and there are simple text fields for the List, Address, Link, and Note options. For now, these are the only push-to options that PushBullet offers, but I suspect more will be added at some point. I'd also love to see some drag-and-drop functionality added to the site, which would make desktop-to-phone file transfers even easier.
It's worth noting that Internet Explorer and older versions of Firefox do render the PushBullet.com site differently. With these browsers, the site shows no explanatory text for any of the fields, which is confusing, especially if you're trying to send a link to your phone. If you encounter this problem, just know that the first field is for the title of your link, while the second field is for the actual URL. Let's hope the folks at PushBullet get this issue fixed soon.