The subject per se is given little attention, and forgiveness of sin is unrealistic. Salvation consists of doing good in excess of evil in order to evolve to the highest state through successive incarnations. Sin is not defined. There is no supernatural intervention. We bear the whole responsibility for our actions.
Salvation comes through the realization that there is no duality.
The Way of Knowledge, usually involving meditation focused within. This may be aided by silent repetition of a designated, personal mantra, which is a group of sounds without meaning. The Way of Works, following prescribed rules of conduct without desire. This is the more common way of India, much less emphasized in the West. The Way of Devotion to a deity, involving continuous chanting of the chosen name, as exemplified by the vocal Krishna-Consciousness cult.