Hi Renate, welcome to CC
Why not find a Christian church around where you are? Talking to someone in person may be helpful in answering your questions.
I can tell you, though, that first and foremost is your willingness to believe that Jesus Christ is real, that he's the only Son of God, that he did die for your sins and was resurrected. That God is real, and eternity is real. Once you are
saved and become a Christian the Holy Spirit comes into your heart, and then you will have faith, since this kind of faith comes only from God.