To become a Christian, a person must first realize that he or she is “lost”—totally estranged from God, separated from God by a sinful nature. Get a Bible, the history of God's relationship with humankind, and read from the book titled Romans. Romans 3:23: For all have sinned and come short of the glory of God.
A person alone cannot reconcile the lost relationship between himself or herself and God. To provide a remedy, God sent his only Son, Jesus, to live the perfect life God demands. Romans 6:23: For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.
Although humanity through sin has separated itself from God, the sacrifice of Jesus on the cross bridged that gap. Romans 5:8: But God commendeth his love toward us, in that while we were yet sinners, Christ died for us.
All that God asks is that a man or woman repent of his or her sins, turn from them and accept the sacrifice Christ made on the cross for those sins. Romans 10:9: That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
God promises in the Bible that anyone who accepts Christ as Savior shall be saved. Romans 10:13: For whosoever shall call upon the name of the Lord shall be saved.
Baptists believe that a person who accepts Christ as Savior should also follow him in believer's baptism by immersion and join the fellowship of a local church of like-minded believers.