There is only one baptism that counts today. That is baptism by the Holy Spirit. Any other type of baptism today is simply an outward expression of the true baptism that takes place in a believer that has been regenerated by the Holy Spirit. This regeneration occurs for a person when they come to saving faith in Jesus and what Jesus did for all sinners on the cross. Jesus took away the sins of the world, so that anyone that believes in Jesus and his finished work of taking their personal sins, is born again of the Spirit of God. Prior to believing, a person is dead in their sins, because they did not believe. But, when a person repents of their unbelief, Jesus comes to live within that person and gives them eternal life. This is the Baptism of the Holy Spirit; giving life to the dead, becoming born again in the spirit.