The first time I read them all the way through without skipping a page.
Lately I have been reading little bits and pieces for reference. (Alas! All of my books are packed and I must make do with the few I can find at the library.
) But when they're not packed, I tend to read them while skipping over much with Frodo and Sam - same as Lalaith, I prefer the Fellowship's journey over that of the Ring.
I re-read the Battle of Pelennor fields over and over.... same with "The Steward and the King".
Also, (to my sister's dismay and irritation), I re-read any and all Elvish over and over... and then I talk incessantly about the Elves and Rohirrim whenever I find someone who is even remotely listening.
-Elrowen