Introduction to Azure Service Bus for MSMQ users

A short 5 parts Introduction. Since it was written for people who already have some MSMQ experience, it's a distilled way to get you started.

Part 1 - Introduction
What's a namespace, intro about Azure Service Bus queues and messages.
Part 2 - Topics and subscriptions
Publish-subscribe messaging pattern and how that's different from plain old queue we already know from MSMQ.
Part 3 - More about queues
Deadletter, partition and session queues.
Part 4 - More about messages
Deferred and scheduled messages, what is Delivery Count and how to handle message priority.
Part 5 - Developer's perspective
Which APIs to use from .Net, two modes of receiving messages, and something about batch operations and transactions.