Node change

Hello everyone, I started to learning Dynamo in revit whith some video tutoriel, but when I install the new version of Dynamo, I don’t found the same node and logic with older version ( for exemple the Sun Path Direction in Dynamo 0.7.3 not found in Dynamo 0.9.2). So somebody can tell me how can I found the diffirent from Dynamo version, and understand how to fixe this problem in new Dynamo version. Sorry for my English and thanks for all the answer.