There are so many ways to grade... Gunleik's may differ to mine, but the fact is, if we are getting the results we want, then they both work.
I don't really grade in RCX - Im more of a RESOLVE guy.. or even in AE or speed grade... how ever. RCX even though it give no windows or effects, it still grades R3Ds perfectly as they are.
Here is a very simple & basic before and after still frame to get you started. note the toe of the curve. Also... remember, everyone does things differently. :)
NOTE: I shot at 320 asa on purpose to see how far I could push a base image. Just so you can see something on the video spilt or touch screen for the night, crank it up to 1200 or something... at the end of the day, the chip is still around 320ish... so your only cheating the meta data get it brighter on screen. This is a worse case test for me, to see what I can get from nothing. and from nothing we got something :)