A few years ago I put together a learning Maya Fluids Dvd with Neehar Karnik. It contained numerous tutorial videos along with mel scripts and scene files. The material is still relevant today, although the Dvd was no longer offered in the Autodesk store.

Now the full contents are available here for free to Maya Subscription customers:

www.autodesk.com/subscription

Once logged in goto:  Training/Autodesk Maya/ Training Videos/Dynamics

As well many of the video tutorials are available to all on the Autodesk youtube channel:

http://www.youtube.com/view_play_list?p=A7756842D6CE3BFD

Note that I would today use nParticles instead of the old system for most of the examples, although for the most part it should be trivial to replace any use of particles with nParticles, as nParticles is derived from classic particles.

Here is the original blurb with the Dvd:

Maya Techniques | Maya Fluid Effects is your key to unlocking the power of Maya Fluid Effects. With a special focus on working with expressions, you'll learn how to combine particle system and fluids to produce a wide variety of effects. Learn how to make full use of fluids by writing expressions. Master water related effects such as creating foam on an ocean surface using both particles and fluid. Learn to create the most effective gaseous effects, as well as flames and explosions. Understand how to work with Fluid Textures plus hints on how the Maya Fluid Navier-Stokes solver can be used for crowd simulation and more. Included with this DVD are dozens of scene files, created by the experts, to help you learn as you work.

225 min

You Will Learn:

Oceans

Oceans and the Height Field Node
Fluid and Expression Basics
Water Shading
Water Spray and Foam
Water Wakes

Rivers and Flowing Liquids
Gaseous Effects

Flames and Explosions
Smoke and Clouds
Snow
Simulations
Data Transfer

Special Uses of Fluids

Crowd Simulation
Sound Waves
Fluid Texture Uses