You are now in the first step of conversion to Catholicism, the Period of Evangelization and Precatechumenate. Right now you have been exposed to God's one true Church and are seeking answers to questions you may have.
The next step is the Period of the Catechumenate. During the this period you will begin your formal education as you read, learn and explore the scriptures. This can last months or years as you examine the doctrine, dogma, and mysteries of the Catholic Church.
The third step is the Rite of Election. The Rite of Election comes after you have studied the scripture, explored the faith, and believe in the teachings of Jesus Christ as handed down through his disciples and the apostolic chain of succession. During the Rite of Election you begin your formal entrance into the Catholic Church, traditionally beginning on the first day of lent and involving a 40 day fast of absence and reflection.
The final step is Mystagogy. It occurs at the conclusion of the 40 days of lent wherein you devoted yourself to abstinence, prayer, reflection, and self deprivation contemplating the inner mysteries of the faith and The Christ's status as the Trinity. Traditionally on Easter day the mystagogy is complete and you may or may not to choose to accept Christ as the One True God, the Son of the Almighty, the Keeper of Heaven and earth, of all that is seen and unseen. The result of that decision and the Baptism that follows is what decides if you are a Catholic or not.
There is the Sacrament of Confirmation, but that comes after Baptism and involves a much more rigorous study of doctrine to confirm your faith and deepen your involvement in the Church. Being a member of the Catholic faith is a life long commitment and the rites leading up to taking the sacrament of Baptism in the previous paragraph are just the start.