Hello,
Some of the project files in the videos are out of date, you may want to create a Maven archetype instead using the latest Adobe Archetype. This can be done at the command line or using the Eclipse plugin. If you use the Eclipse plugin, Click File > New > Other > AEM > AEM Sample Multi Module Project and choose Archetype 8.
If you use the command line, the Maven command is:
mvn archetype:generate -DarchetypeGroupId=com.day.jcr.vault -DarchetypeArtifactId=multimodule-content-package-archetype -DarchetypeVersion=1.0.2 -DarchetypeRepository=adobe-public-releases
GroupId: com.adobe.training
Artifact: company-training-product
Version: Default
Package: com.adobe.training.core
appsFolderName: company
artifactName: Company Project
PackageGroup: Company Project Package