Admittedly, global education sounds like an overwhelming and large concept. There are many resources available to help you begin. Here are a few that have helped me:
Educating for Global Competence: Preparing Our Youth to Engage the World by Veronica Boix Mansilla and Anthony Jackson This book is a great resource. "It will help all of us think creatively and critically about how to better prepare the learners of today for the world in which they live." Gene Wilhoit, Executive Director, Council of Chief State School Officers
10 Demographic Trends That are Shaping the U.S. and the World 2 by D'Vera Cohn This article highlights important statistics that reflect our changing world.
Global Education Checklist for Teachers, Schools, School Systems and State Education Agencies by Fred Czarra This is a great self-assessment tool for those in education to reflect on their knowledge, skills, and participation in global education.
101 Web 2.0 Teaching Tools The title says it all. This publication lists and describes 101 resources that range in categories from E-Learning to Collaboration.