Many people had requested for online resources to read/write Sourashtra.
I am sorry I was not able to respond to all those comments earlier.
This is the wikipedia link - https://en.wikipedia.org/wiki/Saurashtra_language
The youtube channel to learn the language - https://www.youtube.com/channel/UCfwyLbLjpTmwjmSMVIkMVHQ
If you want to just learn to speak - the easiest way is to find a real Sourashtrian and learn from him/her.. :-).. assuming you knew about this language only after meeting one in person.
As pointed out by Mr. Subramanian in the comments, I am updating the links here:
Visit the Face Book Group - SourashtraBhasha - to know more about sourashtra language.
You can also visit