With faster performance than the mobile site and quicker access to your most-used functions, the official Facebook app is undoubtedly the best way to interact with Facebook from your Android device.
Just like the full Web site, the Facebook app opens up to your News feed, where you can read, like, and comment on posts. It's all intuitive, and if you've used the site before, should look and feel familiar. Scroll to the bottom, and your feed automatically reloads, so you can almost seamlessly continue to read old updates.
With a recent update, Facebook for Android gained the ability to share your friends' posts from your News feed. To do so, just hit the Share button and add your own thoughts to the post (if you want), then pick an audience setting to share publicly, only with friends, and so on.
When you create a status update, the Facebook app lets you add text, tags, photos, and location. As of now, though, you can't add emoji. Also, if you try to add a URL to your post, the app will not add a preview of the linked site the way the Facebook Web site does, and that's disappointing. If you really want a preview, though, you can share the URL from your mobile browser to the Facebook app, and a preview will automatically be added. While it's certainly great that this workaround exists, the Facebook app should be able to add previews on its own.
Near the top of the screen are navigation buttons for commonly used controls like Status, Photo, and Check In. You can also quickly jump to notifications, friend requests, and messages from the row of buttons at the very top. For everything else, there's the slideout navigation panel on the left.