PUBLISHING FAMILY HISTORY BOOK

Hola to all my Rancho's Primos
I am trying to get as much information about publishing one line of my family,
The SAAVEDRA/BALTAZAR line of Durango, Chihuahua & Texas. My question to the group is where do I start, what should I include. Any tips from our group would be welcomed! Sources, examples, sites or any personal experiences -seran bien recibidas. I read in a book that "Ir's not history until it's written" so I do want to write and print & share my work with my familia.
Yolanda Medina Perez
El Paso, Texas