While we certainly wouldn't discourage it, Catholics don't need to enroll in a course or attend seminars, in order to learn more about the beautiful foundations of their faith. Just turn to the The Catechism of the Catholic Church.
There's really only one goal of the Catechism: to bring “people …in communion… with Jesus Christ” because “only he can lead us to the love of the Father in the Spirit and make us share in the life of the Holy Trinity” (CCC 426). Basically, an invitation to fall deeper in love with Jesus Christ.
The Catechism is organized according to the four pillars of the faith:
The very last words of the Catechism are: "AMEN". Reading and praying through the Catechism is like speaking one long "Amen!" - yes, Lord, we believe You and we love You!