Unless I'm looking for the answer to a trivia question or have a craving to look at a passage that I particularly like, I prefer to read the entire book in order. I like having the continuity of the story intact.
Recently, with RL schedules being out of control, I've been jumping out of order to my favorite chapters. I'll usually skip the battle scenes, if anything, since those were never the main focus for me. But I haven't been able to read at all for the past few weeks because my books are about 300 miles away.