Book Blog--Themes, Chapters, and Chronological Entries

After spending several days converting blog posts to book pages, I am making some decisions that, in my opinion, will improve both the readability and the quality of the book.  I've divided the book into related themes and put these into chapters.  Now I need to order the posts in each chapter in chronological order, from oldest to most recent.

This is a large difference from the active blog.  The active blog contains labels (also transported into the book).  Each entry is posted chronologically.  This makes it an accurate journal, though keeping the related themes together makes good sense.