Homesteading is a very broad category so it can cover many different subjects. I will try to list classes that cover those subjects, but many are something found locally.
If you know of a class that would be good for this list contact me with the information for the classes and I will look at adding it to the list.
How to Can, Freeze, Dry and Preserve Food – This is an online course that covers many areas of food preservation, and the courses are offered for a reasonable fee.
Rainwater Harvesting – This company offers classes locally for them, but they also offer very good information for download for harvesting and using rainwater across the United States.