Can link to/import from an existing directory?

Things I have tried

I’m a new user, just exploring. It may be more than I’ll want to commit to.

I’ve checked the help docs and don’t find an obvious answer to my question: Is it possible to link to or import from a existing directory.

I have a directory with a lot of files created with Vim/Vimwiki. Some have simple markdown formatting—headers and links—some are plain text.

What I’m trying to do

I’d like to see if I can start experimenting with Obsidian with a large collection of already existing notes.