They've got their Joget Academy. The entire course is about learning joget while creating a purchase requisition app

That's $300, I mean I am sorry but it is too much

If you bought a license, send an email to JOGET asking for a voucher for free access
to paid courses. I also had difficulty learning how to work with the platform. 
I don't understand why JOGET doesn't make paid courses free for everyone like other
low-code platforms do, it would be a way for them to grow....

Yes exactly, if you want your developer community to grow at least provide learning resources free

You can see at Joget Market some apps that maybe you can use, to learn or take ideas.

You can register for there webinar courses (FREE). They provide a deep dive into Joget from Start to Scale. You can follow them on LinkedIn to get updates on their latest workshops. Hope this helps. 

https://www.linkedin.com/posts/joget_webinar-lowcode-joget-activity-7251583425382359042-1hyC

Thanks this will surely help