Hey guys, I am just wanting to know what the difference between UDK and Unreal Engine 4. At the moment I have Unreal Engine 4.9.2, and while I have been looking at tutorials there are some that use UDK and some that use Unreal Engine 4. So if someone can clarify this up for me as to what is best to use and if I can follow the same process in the UDK tutorials within the Unreal Engine 4.
There are some things that are kind of similar (material editor, matinees, lighting, etc) but i’d say stick with the UE4 tutorials. Kismet doesn’t exist anymore it was replaced by blueprints. If theres a specific tutorial that you want to achieve that’s only been done in UDK then have a look at it and see how you could implement it in UE4 but I’d say it will be alot different unless its something like importing assets, creating materials or cutscenes.
Many things from UDK still work same way in Unreal 4, but to see it (and translate over to U4) you need to know both UDK and unreal 4. So tutorials from udk are not that great anymore.
However general tutorials (for eg. how to prepare meshes from Hourences page) are still valid. But unreal 4 has so many new tutorials that i really see no reason for learning from UDK ones unless you want to recreate some of old tricks.
Now kismet is called “level blueprint” (in my opinion the level bp works the same as kismet) 
When you use UDK tutorials, just watch the ones about materials or particles, because that’s still nearly the same + there are some useful UDK tutorials around that will explain you how to create cool effects (e.g there is just one UE4 rain tutorial which uses a particle system, but there is also a UDK tutorial that uses a mesh)