...
...
One last newbie questions; I have heard people mention using NX2 as their RAW converter and then opening the image in LR or Photoshop to complete their edits. What exactly does this mean and is it important? Are they just saving as TIFF and opening in the program of choice? It seems doing this would double the amount of space needed to save the TIFF.
It always depends on what they want to do. - There are many people who still prefer NX2 as a RAW converter since, as they say, it gives them the best conversion results and does keep their internal Nikon camera settings. Others prefer LR3 as a RAW converter since it offers more of a complete workflow, e.g. cataloging, RAW editing & filtering, output and so on.
Some people who use the new Nikon D7K cams but have older LR2 or PS CS 3/4 versions, can't process/convert the D7K NEF files with those older versions, they have to process them either first with something like NX2 or use separately Adobes ACR or some other suitable RAW converter. So to say, in such cases a two way process converting the NEF files to DNG or TIFF and then they can work with those in older LR or PS versions.
Another point is, if you want to tweak and manipulate your images more than you usually can do with NX2 or LR, say exchanging backgrounds, applying filters and doing more advanced image editing and manipulation, in such cases you would also need something like for example PSE 9, PS CS5 or the like to do the final work.
Even LR3.3 nowadays is a very good tool, which offers a lot for a complete workflow, RAW conversion, filtering, applying own presets etc. in one package. But you can yield the same with the big PS CS5 and even more. If cost does play a role, you can even use PSE 9 for many things. - Or you just reuse your NX2 and use some additional tool for cataloging etc. if you have a need for this.
BTW the above PS crossing stuff can also easily be done with Capture NX2, look here...
http://dptnt.com/2008/10/cross-processing-in-capture-nx2/
...the author of that from PS converted tutorial also attached a settings file for NX2 which you may can reuse for tryouts.
Hope this helps at least a little bit...