Below are some resources that one can use to explore these themes further.
Articles
Peter Singer article:The Singer Solution to World Poverty
Thomas Pogge article: Eradicating Systemic Poverty:brief for a global resources dividend
Books
The Long Loneliness by Dorothy Day
The Good Life: Helen and Scott Nearing’s Sixty Years of Self-Sufficient Living by Helen and Scott Nearing
Gandhi An Autobiography: The Story of My Experiments With Truth
Diet for a Small Planet by Frances Moore Lappe
The Life You Can Save: How to Do Your Part to End Work Poverty by Peter Singer
Websites
“…the failure of people in the rich nations to make any significant sacrifices in order to assist people who are dying from poverty-related causes is ethically indefensible. It is not simply the absence of charity, let alone of moral saintliness: It is wrong, and one cannot claim to be a morally decent person unless one is doing far more than the typical comfortably-off person does.” Peter Singer, Achieving the Best Outcome: Final Rejoinder, Ethics & International Affairs, 2002