Hi Erik, I'm a newbie myself.
You can use the studio to create courses. If you run your own edx site, there should be a studio you can use to create courses, I think it's
http://yoursite.com/edx-studioIf you create courses in the
studio.edge.edx.org site, you can export the course out as a gzip tarball. Then you just login to your local edx server as the admini and import the course.
There's a lot of documentation to read through.
Best!
Adam