Here's a quick and easy set of tutorials that will introduce the pattr family of Max objects and show you how start using them in your Max patches.
Tutorial 1: Quick Start
This pattr tutorial will have you creating and storing presets in your patch in no time:
Tutorial 2: Sharing/Storing Values
The pattr object provides a versatile way to store and share values in a patch. Here's an overview of how it's done:
Tutorial 3: Preset Morphing
You can use the pattrstorage object can interpolate between stored preseet values using various a few simple techniques.