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Confused about APIs and JSON? Looking to run an arbitrage business or build a data intensive site? Well this video is for you. This is the first of our videos looking at programming calls for exchange data. In just a few lines of code, we grab the last price from four exchanges (Btc-e, Kraken, Bitstamp and Bitfinex) and pseudo exchange extraordinaire, Coinbase. James walks you through the first steps of building a live feed of this data.