Interactive Self-Study Modules
Most modules include: introduction, ConcepTests, short introductory screencasts, important equations, interactive simulations with questions, quiz-yourself simulations, example problem screencasts, and summary.
Material & Energy Balances
organized by textbook here
Fluid Mechanics
Thermodynamics 
organized by textbook here
    Basics:
    Energy, Entropy, and Cycles:
    Single-Component Phase Equilibrium
    Multi-component Phase Equilibrium
    Chemical Reaction Equilibria