Access Longhorn volume

I’ve installed Longhorn 0.5 on Kubernetes 1.14 Ubuntu.

I want to create distributed volumes in Longhorn for my applications running in pods, where they will store and access static files, similiar to a webserver.

But I’m unsure about the whole setup.

I want to be able to mount the volumes outside the pods and mount the volumes, to access the files.
Is that possible?
Is that the idea behind the iscsi target?

I have not been able to find detailed description/explanation of the different drives, CSI, Flexvolume… does it exist?

Thanks in advance