Inquiry in JR Pass

Hi! I'm from the Philippines and has been granted a 15 days visit in Japan.

I've been asking my friends who has been in Japan on how to use the JR Pass and which specific station should I be drop off but no one is really specific with the answers and I'm a bit frustrated that I might get lost.

This is my Itinerary:

Oct 28 is my arrival in Japan. [Kainsai Airport to Osaka (Fukushima Ward, Osaka, Osaka Prefecture, Japan)]
Oct 30 [Osaka to Kyoto]
Nov 03 [Kyoto to Tokyo]

If I get a JR Pass will i save more money or cost me more? Please send me a cost breakdown. Thank you!