By sprinkling or immersing the person in water. Often vows are made, either by the parents or by the believer.
Because it makes one become born again
Usually by sprinkling water on the head or by immersion in water.
No.
The sacrament of baptism can be administered at any time of the year. There is a special night, specifically the Easter Vigil, that has baptism within its ceremonies. During the Easter Vigil...