General :: Wireless Network For Phone / Tablet And Computer?

I've just gotten a Samsung Galaxy Note 10.1 to go with my S3 and now that I have more than one device floating around my house, I'm wondering if there is a better way to share files and data among them than to hook each to my computer separately and then transferring stuff around by USB. I'm looking into Kies, but in the past, I've never been able to get it to work correctly, so I'm not sure if this will work any better on this attempt. Am I on the right path, or is there something different / better than Kies that I could use to have all three devices available on the network for sharing?

I guess I should probably ask if what I want is even possible... I'd really like an always on type of networking where as long as the device is online, I can push data back and forth (ie if my tablet is at home sleeping, and there is a file I want to get from it, I can access it from my phone and vis versa). In addition to that, I'd like a similar connection to exist between my two mobile devices and my computer so I can transfer files back and forth with the computer without having to take up desk space by connecting the device with USB.