Hi there,
There is a lot to cover on Unreal Engine 4 but for sure the most challenging for the newcomers is the lightning…
If you install the GPU lightmass you will only be using that bake type. If you want to use both you should make a backup of your engine and use one or another.
Has for the Datasmith and 2nd UVW Maps: Yes. You need to make a 2nd UV map to archive a very good shadow specially on complex geometry although datamsmith will give you a hand on those who haven’t the 2nd map
I am making a Kickstarter for a course on Photorealism for Unreal Engine 4 where I’ll give examples on 3ds Max and others. If you are interested in please share or support it!
https://www.kickstarter.com/projects…?ref=user_menu