This tutorial provides a hands-on introduction to developing a custom activity.
You will see, the examples are simple enough even if you have never developed an activity with Workflow Foundation before, you can learn it in no time.
In the following lessons, you will be introduced to the most essential elements on how to develop an activity, one feature at a time. As a beginner, you should either start with the first lesson or, if you want a very brief introduction, take a look at the skeleton activity project. While the beginner's course will enable you to develop a simple activity, the skeleton activity has example's on some advanced features, which are a bit harder to grasp but can take your activity development to the next step.