The Sony RX100 is the best compact around for the time being (and you can now go for the RX100 II for which they added some nice and useful goodies) if not considering kind of compact cameras with fixed lenses with a fixed focal distance (no zoom) as the Nikon Coolpix A. But if the image quality of the RX100 is not enough for you, forget about compact cameras and try with a semi-compact with a bigger sensor, for example, something as the Sony NEX 7. If that does not still fulfill your expectations, you can always go for a full-frame or you could spend about 7.000 U$S and update to the Pentax 645D (which is a medium format camera).
You can always check and compare camera sensor ratings done (benchmarked) by DxOMarks for different cameras, at this site http://www.dxomark.com/index.php/Cameras/Camera-Sensor-Ratings
It comes with a small guide to help you set it up. Things like how to insert the battery, the SDHC card and how to charge it. The full user guide is available as a download from the web. There is also various settings menus that are available on the camera it self.
The battery charger (that I received) is in 2 parts. You must insert the smaller part (of the charger) into the larger part (the one with the cord) The battery should snap into this smaller part. Why they made it this way is unclear to me.
You charge the camera using a USB cable that will plug into your computer or a wall charger (with a USB connection). You'll have to check the specifications, but I'm confident it can be either 110 or 220 v for the wall unit. It's a wonderful camera.