It may seem a stretch to see the study of grammar as a spiritual practice, but this is exactly how many Yoga traditions view learning and practicing the Sanskrit language.  Sanskrit study traditionally takes its place in Yoga as one of the paths to true knowledge. This page offers some resources and information for the aspiring student.

Wild Garden Yoga Translation Projects

Other schools and resources:

Ananda Ashram School of Sanskrit

Online Sanskrit Pronunciation Guide

The Devanagari Alphabet   Guide to writing Devanagari script.