where is free UE demos in marketplace?

apart from infinity blade free contents and zen garden demo, the marketplace does not have the unreal engine free demos like Elemental demo, the Boy and the kite, bullet train & VR Showdown.
they were all announced free for users and how when i got a new laptop and installed UE there is not free demos!!!

Please state where can i download them???

I think U missed it out somehow .Open Epic Launcher . Then select Learn tab . Head down and U will see loads of free projects including the kite demo too.

Ooh sweet jesus!! I was so dumb. Thankyou
An BTW can you tell me how to extract a single model, character or material out of these demos for personal learning and non-comercial purpose

that is totally possible
read this