Some help getting started

I’ve been using Docker for about a week now, and it’s pretty awesome. I’m curious how I can go about integrating some of the projects I have on my host machine into Docker containers. For example, I have a couple of Python projects and a Git repository for a Jekyl website in my local directory, but I also know there are Python and Jekyl images in Docker Hub. Can anyone help me move them to Docker or somehow copy them? It’s not a problem to keep working on them on my host system but I probably can get more accomplished by working with Docker containers.

Thank you!