Repositories such as the Internet Archive or Sanskrit eBooks host various Sanskrit learning guides. Note that some titles, like "Samskrita Vyakarana Dipika," are similar but distinct from the Sringeri series.
: A repository that often lists free downloadable PDFs from the Digital Library of India . Samskrita Bhashaa Deepika Prathama - Sharada Granthalaya Samskrita Bhasha Deepika-i Pdf