I flicked through 'Master the Markets' by Tom Williams and thought it contained some useful points but overall I think
VSA is more suitable for stock traders. A lot of the concepts revolve around market makers and their ability to see what other traders cannot see (stops and limits) but this isn't applicable trading futures on exchanges like Globex, ECBOT, EUREX and Euronext. We can see the same things that everyone else can see through the time and sales and order book so it makes sense to concentrate on that information instead of just focussing on volume and price.