Paripurna Marathi Vyakaran by Balasaheb Shinde is widely regarded as a premier resource for students preparing for competitive exams in Maharashtra, including MPSC, UPSC, and Police Bharti. While "verified" PDFs often circulate online, students typically prefer the physical editions published by Anand Publication to ensure they have the most up-to-date content and practice questions.
As for a blog post covering Marathi grammar by Balasaheb Shinde, I found a few articles that summarize his work on Marathi grammar. Here's a brief overview: marathi grammar by balasaheb shinde pdf verified