The fastest way to grok this project is to read the Getting Started guide. Many of the other wiki articles presume you're familiar with what is discussed in this guide.

A practical 3 mins guide to get it up and running Marshal and unMarshal your golang Struct variable.

This article discusses the MessagePack type system.

This article discusses how msgp maps Go's type system onto MessagePack, and vice-versa. Topics include numerical overflow, complex numbers, time.Time, and type system extensions.

You can also see Tips and Tricks for fine tuning your data types.

See how to customize the code generation with preprocessor directives.

Learn how to implement your own MessagePack types.

Also read this for basic versioning.