As other Protestants, Presbyterians believe in the Holy trinity, in that the God created everything, that he sent his son Jesus Christ to be crucified in order to forgive our sins.
Well, first and probably most important thing that separates us is the fact that we don't believe in government.
Also, Presbyterians do strongly believe that the confession is only between you and the God. Therefore you are welcome to do it voluntarily, without a church representative. Even though we want to encourage you to not be afraid of confessing your sins, you are free to do it in your own time, where you want to do it and when you feel the most comfortable.
Another important aspect that differs Presbyterians from other churches is the emphasis on education and continuous study of the Bible. We believe that the study of the scriptures has no end. There is a lot we still have to understand and only by reading the holy texts again and again we can be sure that we are getting closer to understanding of the God and the whole world that he has created.
As Protestants, as Presbyterians we believe that no church has the authority over the other. We are all children of God, and the only thing which differs is how we manage our congregations. But in the end of the day, all that matters is that we are kind to each other and that we spread the love for our Lord Jesus Christ.