http://en.9jcg.com/comm_pages/blog_content-art-105.htm
here is the tutorial link.
here is a link to the next tutorial ive done.
http://cg.tutsplus.com/tutorials/autodesk-maya/create-a-realistic-explosion-in-maya-using-maya-fluids/
in this tutorial i learned how to make a realistic explosion, everything i learned was just about new, some of it i still need to work on, so ill be able to do it without a tutorial. in my opinion i think it turned out great, not much i would change on it.
And the last tutorial ive done is a dynamic lego break one, where the lego cars bump into each other without setting keys and break apart, in this tutorial ive learned all the basics with dynamics, or at least most of them, it didnt turn out the way i was hoping it to, and it brought a lot of frustration with it. but in the end, i learned something and thats what counts.
here is link for tutorial