Many Social action groups are provided in particular dioceses/cities/states - This section provides resources that are location-independant. Please search for catholic social action groups in your area - because there are many good Catholics doing amazing things!
Unites States Conference of Catholic Bishops Website - A wealth of information, from daily mass readings, to access to the catechism, to news, etc. Nice resource
EWTN - Great all-around resource, faithful to the magisterium - get the mass readings, listen to Catholic radio or TV online, find other resources.
Catholics who Care (Facebook Group) - Dedicated to performing small actions to end the problems in today's church, in the pursuit of personal holiness.
WINE - Women In the New Evangelization - Empowering women to work within their God-given gifts as women to nurture, heal and build up the body of Christ.
Catholic World Report - free online Magazine from Ignatius Press, from a faithfully Catholic perspective.
Humanae Vitae - papal encyclical on the Catholic teaching regarding contraception and the purpose of married love
WRITINGS OF SAINTS
Dialogue of St. Catherine of Siena - a "conversation" between St. Catherine and God the Father. - (not easy reading)
Grief 2 Grace - Retreats designed for victims of sexual abuse, created by the founders of Rachel's Vineyard