I am on a tight budget/timeline and would like to know if there is a way in motion to create "carbonation" through the replicator. I know the easiest way would be to shoot seltzer water, but I do not have the resources to do such a thing.
In addition to online resources, Motion ships with a nice set of tutorials, they're just in PDF format so a lot of people miss them. In Motion, go to the Help menu and select 'Tutorials'. There's a good section on particles.