Where to buy Ether ETH to use to buy XNK

Hey! Just saw this, sorry I haven't been checking in as much as I said I would. Pretty much every exchange you will use for crypto has Market Books where you can place orders to buy or sell. The difference between a market and a limit order, is that a market order is being placed against the existing orders in the Market Book, meaning that if I want to sell say 1 Bitcoin as a market order it will go to whoever the highest bidder is in the Market Book, whether it is $6,000 or $6, and similarly for a market buy you will pay whatever the lowest posted sell order is, whether it is $6,500 or $6.50 (not sure if that makes sense for you or not). A limit order is the exact opposite, limits are the orders that are listed in the Market Books, you name your price whether it is 1 Bitcoin for $6,000 or $6, but you obviously have to wait for someone to do a market order for your limit order Benefits of using limits orders are usually cheaper fees, like GDAX I believe it is free for limit orders (market makers) and like 0.3% for market orders (market takers). Not a big difference as a market order of say $100, would only have a $0.30 fee, small price to pay for easy liquidity. Of course $0 fee is better than $0.30, but that is if you want to be a market maker with limit orders, which requires patience.