I am asking about where can I get a a new tutorials about ArcGIS apps like Instantapps , hub, app studio,dashboard,survey123 and so on to do some projects on my intern and learn more about these applications.
Howdy! Once you log in with your esri account, and your organization page is displayed, click on the training tab. Go to Esri Training or the Free Unlimited Training tab. This should take you a page where you can build your own learning program. There are hundreds of courses, although you have to have authorized user - type license, i.e. Arc GIS Pro, Drone2Map, etc.
I hope this helps.