Never underestimate the web's resourcefulness. A recent search for fluid power subjects turned up a few unique sites worthy of a second glance:
Hydra-Pneu Consulting (www.fluidpower1.us) offers brainteasers to keep the hydraulic-inclined minds occupied
Pneumatics Online provides calculators in both metric and imperial units to measure valve flow, cylinder force, and cylinder bore size at www.pneumaticsonline.com.
Pump School enables engineers to learn about rotary pumps on their own time, in addition to providing information on tough applications, typical liquids, and rotary pumping principles. Go to www.pumpschool.com.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.