This manual is intended for Dynamo users who want to learn Grasshopper for Revit, Grasshopper users who want to learn Dynamo for Revit, and users who are new to both Dynamo and Grasshopper and want to learn one or the other. This manual is also intended as a quick reference for current Dynamo and/or Grasshopper users at all levels. This manual will introduce the readers to a more introductory level of practical Grasshopper and Dynamo for Revit concepts.There are hundreds of nodes in Grasshopper and Dynamo and it would not be possible to show all of them in this manual. Also, this manual focuses on out-of-the-box nodes for Grasshopper and Dynamo to give the readers a good understanding of what is available after install. If custom nodes are used, then the example will mention it. Also, just like the nodes, this manual could not possibly cover all subjects of Grasshopper and Dynamo so instead it focuses on Grasshopper and Dynamo examples that are important to their interaction with Revit.