There are lots of Indians in NJ. Gujarati is something like the third-most spoken language in the state. Edison is great and if you are interested in attending a Hindu temple there is the absolutely massive one in Robbinsville. It is not the only Hindu temple in the area.

If you are taking the NJ Transit train semi-regularly in and out of Newark (like for an internship or something?), the Flex Pass may be worth it. Otherwise buying tickets individually is fine and easy enough to do on your phone.