1. Depends on how you wanna eat. I personally eat it alongside the other stuff- eat bread, eat onion, eat chilli, PROFIT. Oh and its pickled chilli btw
2. The flatter bread is called kachori (well I'd call them puri since kachoris are a bit smaller in size and more doughy, but whatever. Puri is fried flatbread made of unleavened flour. The smaller bread is called khasta- its crunchy and flaky. The darker ones are called vadas, which are essentially doughnut-shaped snacks made by soaking legumes in water, grounding them to a paste, adding condiments to it and then frying it in oil. Very soft.
3. Placed on the bed. All the passing around with the chickpea gravy, the mashed potatoes and the other things tends to get messy. (no we are not white and we generally don't eat things with knives and forks, call us uncivilised)
Its very heavy on the digestive system btw, I could personally finish only one of each in one sitting. But its all worth it.