Please be warned about "Gurus" in India. Most of them are manipulative, corrupt scumbags. I would highly recommend not getting your dose of Indian philosophy from them.
This Documentary was awesome to say the least. With many human mental shortcomings on display.
But just to clarify, Tagore was not such a "Guru". He was a poet, philosopher, artist and a true genius of our times. Despite his looks he wasn't a religious "guru"
I would further add that each and every person's journey of inquiry is personal and also encompasses their experiences of being manipulated, whether through institutions like the church or mosques or through individual conmen like many indian gurus.
Some of them, like Steve Jobs, manage to break away from this illusion and seek to find their inner truth through their personal work and others through their charity work. ultimately, though, the journey is personal and usually unique.