Quote from JesseJamesFinn:
Joush Lukeman's book "The Market Maker's Edge", he was a Nasdaq Market Maker for a Tier One Firm. I found his information to be transferable to any type of Market, for $3.00 off Amazon's old books it's worth the price.
Active Trader has a old article how the NYSE Specialist makes a Market in the new electronic world of trading. That's a couple of years ago, are Markets that different from Stocks and Options to Forex and Futures?
Quite a bit different... larger size, harder to hedge, decimalization in hfft requires automation.