Knowledge base

Links:
 
http://chartapi.finance.yahoo.com/instrument/1.0/AAPL/chartdata;type=quote;range=1y/csv
http://en.wikipedia.org/wiki/Algorithmic_trading
https://www.quantnet.com/threads/big-data-for-trading.15330/
http://numericalmethod.com/papers/course1/
 
Order book data:
 
"Level 2 order book data allows traders to see what market makers are showing the most interest in a stock and to identify the patterns for each market maker." (http://www.investopedia.com/articles/trading/06/level2quotes.asp)
 
 
Examples of trading strategies based on order book data:
 
Level 1 market data provides all of the information that is needed to trade using most trading systems, including the moving average bouncezero line cross, and pivot point bounce trading systems. (http://daytradin.about.com/od/daytradingglossary/a/OrderBook.htm).