Are there any good resources, other than official docs, that highlight new additions to the .Net Core 2.0+ BCL (as compred with .Net Framework BCL)? In particular with emphasis on the "new way" of doing things (where appropriate). For example using Span<T> instead of ArraySegement or Arrays? I guess I was looking for some kind of in-depth migration guide from .Net Framework to .Net Core as fasr as BCL and CLR are concerned.