The websites below offers a wealth of expert information that can be trusted to give you true information about what the Catholic Church believes and teaches. Unfortunately, there is a lot of misleading or misinformation out there. You can trust these.
(The USCCB is the United States Conference of Catholic Bishops:)
http://www.stmarthaaff.com (St. Martha Adult Faith Formation – Excellent resource!)
To Whom Shall We Go? Letters from the Apostle Peter by Archbishop (Cardinal) Timothy M. Dolan, Our Sunday Visitor Publishers.
For more on church history, may I suggest: People of God: The History of Catholic Christianity by Anthony E Gilles, St Anthony Messenger Press. It is honest, not sugar coated, and easy to read.