How to restore my iPhone 4S?

So basically everything wiped out of the phone and now I'm wondering how restore my information? Could I take it into the apple store? I need to retrieve my data

On iTunes, you can restore specific things, such as applications and media, by syncing it, and restoring the media. Unless you made a backup of more specific files like documents, or emails you saved or whatever, you have lost forever, and can't be recovered, even by trying to see if someone at the Apple Store can.
Hope this helps,
Dan

Have you ever synced iPhone to iTunes or backed up your iPhone files on iTunes before? If you did once, you can retrieve your data. Here is professional iPhone Backup Restore official website, you free download this iPhone restore software and free to try it. It can help you restore iPhone data if you have ever backed up on iTunes or synced with iTunes.
http://www.iphonebackuprestore.com/