Welcome to the "Widow's Challenge." I hope you find this section of the Fru-Gal site to be a challenge as well as a blessing to you; and may it enable you to be a purposeful blessing to others.
Your first challenge is to read the book, Revolution in World Missions, by K.P. Yohannan. Yohannan is the director of Gospel for Asia, and he is offering his book for absolutely free. Sign up for your free book; it is a refreshing yet also deeply challenging book that will remind you of God's missionary mandate for the world (and what that means for you as an American). My prayer is that this first challenge will set the eternal perspective for the rest of the Widow's Challenges, should you also choose to accept them.
Below is a video by Pastor Francis Chan, remarking about the personal impact of Revolution in World Missions.