I am also an Indian and I am walking the camino this September. OM shanti and buen camino
Just FYI, BTW, and for what it is worth... My namesake, St. Thomas the Apostle, traveled East from Jerusalem to spread the Christian gospel along the way and eventually in western India. He was martyred and, I believe interred in Goa on the West coast of India. Goa was also the center or the Portuguese trading and missionary settlements along India's west coast for quite some time, but well and long after St. Thomas' time there.
Like St. James the Apostle, Thomas was also one of the original twelve Apostles of Jesus Christ. Given the very close parallels in both Thomas' and James' ministries, and eventual martyrdoms for their faith, I should think that this pilgrimage would be especially relevant to anyone of any philosophical, religious, or spiritual persuasion from the Indian subcontinent.
All are welcome on the Camino. The rule of hospitality applies to all pilgrims, as we are all united in our journey. Each pilgrim has a different perception of their journey. But ALL are deeply affected by the effort and accomplishment. Along the way, we treat each other according to The Golden Rule." Always treat others the way you would wish that they treat you. Help other pilgrims in need. They will help you when you need help. Do not be shy...
As you speak English, you should be okay. English seems to have become the second language along the Camino. Regardless of where the pilgrim is from, they usually have at least a tiny bit of English. Plus, in my experience, there is ALWAYS someone nearby who can help you communicate.
Most Spaniards do not speak English. So, you would be well advised to at least be proficient with the Berlitz Spanish phrase book and dictionary, or something similar. Be sure to obtain the Castilian / Spain variety of Spanish NOT the Latin American variety.
That will get you through most situations. Knowing more Spanish is always better. I started with the Berlitz phrase book, dictionary and CD ROM. I copied the CD to my iPod and use it to refresh my pronunciation and knowledge from time to time. But, I think I am moving on to Rosetta Stone as soon as I can afford it.
I hope this helps...Namaste!