Okay, now first off I'd like to clarify something first before getting started:
I had absolutely no damn clue on how to use nuclear power in 1.2.5. There was just way too many things to try and keep in mind for building one, and in the end I found it much easier to use the compact solar panels addon coupled with geothermal generators. Plus, they would output more than enough energy to feed a mass fabricator at maximum input (to the point where I wound up overloading it a couple of times and making a few craters by mistake... D'oh!)
So... With that out of the way...
Would it be possible for someone to describe in two ways on how nuclear engineering will now work?
The first way is for those who are familiar with nuclear engineering as is, from 1.2.5 to 1.3.2 and what all has changed that they will keep in mind.
The second method is for complete newbs to the nucular sphientffic stuphs (I couldn't help myself...) such as myself who never understood it, even when reading all the guides about it. Perhaps the guide can be updated to reflect the new methods used and deprecating the old?