Start with Phaladeepika (translated) to understand the Dasa-Bhukti system. Use the PDF’s search function to look up specific Yogas (e.g., Gajakesari Yoga ). Keep a notebook—digital or physical—to record charts.
While not free, Scribd has a vast collection of modern Bengali astrology books. A one-month trial can allow you to download 2-3 high-quality PDFs legally. Search for authors like Bhabani Shankar Nandy or Satyendra Nath Chakraborty . astrology book in bengali pdf