The Tincture Making 101 Mini Course compliments other course offerings, and dives in even deeper to topics such as choosing the solvent (including alcohol-free alternatives), solubility considerations, and phytochemicals, with a focus on tinctures in particular, and lots of videos and tutorials on both basic and advanced tincture making methods, worksheets for the calculations needed for diluting alcohol as well as mathematical ratio tinctures and percolation tinctures (and video tutorials showing how to work through the worksheet calculations!), heated glycerin methods, troubleshooting, an approach to creating tincture blends, and 15 recipes to get you started. 

Tinctures are covered in other courses, but again this is a deeper dive with more video tutorials and it's also nice in that it is a stand-alone course, so for example the Business Herbal Course also has content on making tinctures however that is a much larger course that covers lots of other topics as well.