Kolkata Metro: The only Metro of IR. কলকাতা মেট্রো : তিলোত্তমার জীবন রেখা ।। - PPG

You will get buses for intercity travel or hired 4- wheelers for long journey from Paltan Bazar (south side exit). Bargain hard or you will be looted.
If you are approached by some stranded person or a big family with kids who will start the conversation with the question if you know Hindi, ignore. This is another begging scam. It is their routine; not their sudden fall. They will even say that they don't need money but just something (may be food) for the kids.
If you're going to Arunachal Pradesh, keep your...
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id and ILP ready as it is one of the heavily militarized zones of this country. Don't argue with the army at any state. You will not be spared even if you're a IAS. Unless you're proven harmless, you're deemed suspicious.
Kamakhya is better to visit in the late afternoon to avoid crowd. Hire car from Paltanbazar. Rs. 500 will suffice if you bargain.