This is pretty good. I had a quick glance and surprisingly did find some parts that are generally missing from 'Intro to Algo Trading' literature especially in the execution part. Anyway, I work at this company where we are a product that makes production systems for trading algorithms into a PaaS. We also have a library LibKLoudTrader(http://docs.kloudtrader.com) that incorporates pretty much every thing one needs to start with algorithmic trading.