Thanks to all of you who have provided suggestions for future readings. After reading about them on Memories Alpha and Beta, the books that sound interesting and readable have been added to my Amazon wish list. Now, I have the dreaded task of making up my mind as to where to start.
Also, to find out which ones are available at the local used books store. (Great Star Trek section, BTW.
One question, though:
From early TNG, I'd recommend Jean Lorrah's "Survivors" focusing on Tasha and Data, and its sequel "Metamorphosis".
From what I have read about these two novels on Memories Alpha and Beta, they seem to me to be quite independent from each other, except for their author. Is this analysis correct, or is their something I'm missing?