The ReBuilding Center is offering their classes (mostly) online.
One practical course, “DIY Tool Sharpening,” includes the anatomy of a blade, common reasons for dull edges, and various sharpening tools and their pros/cons. If you have an old knife, chisel, pair of scissors, or garden tool that just won’t cut it, then join in for this video presentation, followed by a live Q&A, to talk through the basics of tool sharpening in simple, yet effective ways. You will be shown how to sharpen tools using sandpaper, metal files, and sharpening stones.
Register online; cost is $20.