Welcome back, OP!
It seems strange to me that all you were told to do was to read the Catechism (not to knock the Catechism). Did you meet with the priest or with anyone at all to discuss the teachings of the Church? Do you understand and accept the teachings, especially the teachings on the so-called "sticky" issues such as contraception, cohabitation, homosexual behaviors, death and dying issues, Mass obligation, what is venial vs. mortal sin, and so forth? Do you fully understand the gifts of the Holy Spirit and the effects of the sacrament of Confirmation, and what the rite entails and means? How are you doing in prayer and in your ongoing conversion in Christ (don't answer here)? Do you know what your diocese requires? (I suggest you look up the sacramental norms as laid out by your bishop, on your diocesan website). Do you have any irregular marriage issues that need to be addressed prior to the sacrament? Do you think you are adequately prepared?
Church law requires proper preparation for Confirmation so that the candidate will be properly disposed to be confirmed (Canon Law Can. 843):
§1 Sacred ministers may not deny the sacraments to those who opportunely ask
for them, are properly disposed and are not prohibited by law from receiving
§2 According to their respective offices in the Church, both pastors of souls and
all other members of Christ's faithful have a duty to ensure that those who ask for
the sacraments are prepared for their reception. This should be done through
proper evangelization and catechetical instruction, in accordance with the norms
laid down by the competent authority.
If you think you need more preparation before you are confirmed, then be respectfully frank with your pastor, and ask him to meet with you, or to assign someone else to meet with you for further instruction, until you are truly ready. If he is flippant about this, then you have some options. My suggestion would be to discern whether you can give full assent to the faith, and if you can, then go ahead and be confirmed as scheduled, but commit to ongoing catechesis. But another option would be to visit with a pastor in a nearby parish, to see what perspective he might have on your situation. It is unusual to require a candidate for Confirmation to prepare for the sacrament alone. Maybe your pastor is stretched thin, due to a shortage of priests, or maybe his health isn't the best?
But the fact that you posted a thread in CAF demonstrates you are seeking. God always draws us to Him, and you are responding! Knowledge about the faith is very important, and helps us do what is most important, which is to encounter Christ.
If your priest is inaccessible, please do what you can to satisfy your thirst for more knowledge, which includes the practice of prayer and worship.
There are websites which offer info, such as "Catholicism 101" at
catholic.net/index.php?option=dedestaca&id=764 and this site (Catholic Answers) at www.catholic.com.
With regard to #1 and #2 in your post, were you writing about one or two priests?
With regard to your question about the roles of priests -- they serve in Christ's roles, as does each baptized person, but differently because of their ordination -- as priest, prophet (teacher/evangelizer) and king (shepherding the flock/administration). They're all different as to charism and ability.