Granny, I think this post was written for you:
On the Misuse of the Catechism of the Catholic Church
Here is an “out-of-context quote”
“When the CCC is read in isolation from Sacred Tradition, Sacred Scripture, and the other teachings of the Magisterium, it is very likely to be misunderstood, misinterpreted, and misapplied.”
Obviously, the writer has somehow missed the footnotes which contain
"Sacred Tradition, Sacred Scripture, Teachings of the Magisterium, Writings of the Early Church Fathers, Prayers from the Liturgy, Philosophy from St. Thomas Aquinas, Encyclicals, Decrees from the Ecumenical Church Councils, Poetic Writings, Professions of Faith, Roman Catechism, Canon Law, Liturgy of the Hours, Eastern Rites, and Ecclesiastical Writers.
This is a recommended book.
The Companion to the Catechism of the Catholic Church, A Compendium of Texts Referred to in the Catechism of the Catholic Church ISBN 0-89870-450-2 (HB); ISBN 0-89870-451-0 (PB)
Seriously, there are some excellent points in the link.
To avoid some of the mistakes mentioned, readers should read the beginning sections on how to use the Catechism and how to follow its structure. Also read the two documents at the very front of the hard copy.
Be careful of the wishy-washy statements about the authority of the Catechism. As seen above, the sources presented in the Catechism assure us that the Catholic Deposit of Faith is handed down to us correctly.