The honest answer is no. Hindustani music is an oral tradition first. A physical PDF is a memory aid, not a replacement for a Guru. You will not find a single 500-page PDF that makes you a master, but you will find thousands of specific PDFs for specific Ragas.
Just as a gym goer lifts weights to build muscle, a flute player practices Alankars to build finger speed and breath control. A good PDF notes collection will include Alankars such as:
Aroh: S R G M+ P D N S’
Avroh: S’ N D P M+ G R S
Pakad: N R G M+ P, M+ G R S Hindustani Flute Notes Pdf
Sargam Geet (Simple melody):
S R G M+ P | P M+ G R | G R S
N R S | S’ N D P | M+ G R S
A dedicated repository for Indian classical flute. They offer "Preliminary Bansuri Notebook" PDF that covers how to hold the flute, breath control, and the first 10 Alankars in Dadra Taal. The honest answer is no
While primarily a vocal Hindustani notation database, SwarGanga’s PDFs are universally applicable to flute. You can search for thousands of Bandishes (traditional compositions) in various Ragas. The PDFs are clean and use the standard Pt. Vishnu Narayan Bhatkhande notation system, which is the industry standard.
If you have a favorite Bollywood tune or Bhajan you want to play, consider transcribing it yourself. This is easier than you think: You will not find a single 500-page PDF
The Bansuri typically has 6 or 7 holes. A quality PDF must include a visual chart showing which holes are open (White) or closed (Black) for each note.