Now, this is a bit newer. Around early November data started being made available from the NASA MAST server
http://archive.stsci.edu/kepler/data_search/search.php
and you'd to play around with that, and something called ST-DADS used by MAST, to select and "order" fits files which could then be downloaded via anonymous ftp, either via an ftp client or possibly via a browser (I didn't check that though).
Some of this could be automated via direct HTTP GET, but about a week ago they added an on the fly web lightcurve plotter, so quicklooks can be done without dealing with ftp or fits files unless you want to.
Initially a few weeks back I obtained data for about 6500 of the public objects, since then more public objects have been released, giving a total of 7500 according to the mast server, although noises made by press releases quote 8500 for some reason. This stuff only spans about nine and a half days, and looks to be the commissioning stuff, and most certainly appears to have had all the interesting stuff kept back. Not just lightcurves. For instance, it is claimed it is no use for looking for planetary transits within it as they are variable stars, or variable lightcurves at least. This implies all the variable stars have been released. Ain't so, there has to be a bunch of periodic variable stars that haven't been released, both new discoveries and also definitely many known variable stars in the field quite coincidentally have no public data for them.
Whatever, if you want to look at it, Guide will let you.
I took fields of relevant data and attached a TDF to it. This data the Kepler people call "browse quality data". Mostly to cover themselves I surmise, but it does allow folk to have a butcher's hook. Note that no formal use of the lightcurve data in any publication or website or maillist is permitted until mid January next year, as firmly stated on the MAST pages help etc.
The tdf for this one is at
http://wikisend.com/download/205410/kepler.tdf
and can be downloaded into the Guide 8 directory.
Purple circles can be right clicked on for more info, and a link followed to get to a page of Kepler lightcurve data which I can't give an example of here coz it ain't mid Jan 2010 yet.
Try the object for this coord 18 40 08.16 +43 34 34.4 to find the field.
Once you get to the webbrowser webpage "mark" the object via the tickbox. If there's another entry, in yellow with an @ symbol, that's "proprietary" so you ain't allowed to play with that, it isn't public yet. Just the other stuff.
There are two topmost buttons. Submit marked data for retrieval from STDADS will eventually get you to something that'll let you order a fits file of the lightcurve data downloadable via ftp client, and viewable in topcat etc, if tick boxes and proper route followed, and all very pedantic and bothersome, so I mention it only for the truly keen, who are on their own re figuring it out (you've gotta wanna).
The "Plot marked spectra" actually generates a lightcurve, a "time series" spectrum. Not a spectrum spectrum. So if you mark it and tick that you get a graph, the lightcurve or electrons per cadence (kind of like a flux) over seconds of time (total duration about nine and a half days).
The above coord object turned out to be an IRAS source and looks and is apparently spectrum K2 according to some catalogues, so it might be an LPV.
Dunno, the "variability" in Kepler rarely looks like that in CoRoT, but I think that's because the lightcurve data is at an earlier stage of processing in the newer satellite mission.
Anyhow, if you wish to look at Kepler lightcurves quick and easy, Guide will do it for you, just go to the Kepler fields and with the above TDF, right click, More Info, click the red KEPLER Link, look in opened browser window, tick the tick box (ie mark the lighcurve), and Plot Marked Spectra, and get a graph which has some adjustable options, and a HELP link too I just notice.
As more data is released the above tdf can be expanded by just adding data to from the MAST data search, though likely it'd be best to start off with a new set of objects.
It'll give an idea of what Kepler is spitting out and how it looks though without having to learn how to use fits files, run java apps, or download from ftp sites. And all just simply from scanning around in Guide, with no input forms to wrestle with.
Cheers
John