Is Web Dynpro for Java important to learn SAP Portal

Hi,

I need to take the following course :

SAP NetWeaver Portal – Development

But I found a prerequisite for that course which is:

Web Dynpro for Java Basics

https://training.sap.com/v2/course/ja310-web-dynpro-for-java-basics-classroom-092-gb-en/

My question is: is it possible to take the SAP Portal course without taking the Web Dynpro course.. If not then I want to learn Web Dynpro for Java .. so how to start and what applications I need to install on my local machine

Thanks