I'm loving learning practical permaculture/homesteading skills through the PEP ciriculum. It's entirely free.
My favorite free resources for learning applicable permaculture is
The Farmer's Handbooks They're free and I learned a ton from them. I wrote this in my review:
These books were written for farmers in the Himalayans. As such, not all the planting ideas will pertain to your given area, but there are still very many useful ideas. And by useful, I mean useful. These are ideas for people who need to grow food to survive, not just to augment their lives. They’re ideas for people who don’t have much/any money to buy fertilizers, amendments, tools, etc…. The ideas are also explained very well, with pictures, descriptions and explanations. These are books that are excellent for someone who wants a practical foundation in permaculture, and will likely have some great ideas for those more experienced.
A good free video is
The Garden of Eden https://www.backtoedenfilm.com/ (Thanks, Michael Cox!), which has a biblical flare, but does show the benifits of not tilling and using mulch. It's a great beginners video.
Paul Wheaton has some nice videos on his youtube channel.
Oregon State University also has a free online "Intro to Permaculture" course at least once a year. Quite a few people here on permies have taken it and gained a lot through it.
Honestly, one the best resources I've encountered in my search for permaculture knowledge, is permies. I love Dr. Bryant RedHawk's
Soil Series. It's a bit more advanced, but is FULL of excellent info on how to build your soil life.