This course gives students a foundation in herbal formulation approaches that can be applied to any herbal preparation. Specifically there are tutorials for several types of herbal preparations are included in the course: infusions, decoctions, syrups, tinctures (maceration and percolation), vinegars, glycerites, honeys, infused oils, salves, creams, and lotions. 

You can read more about the course and register here:
 https://theherbalacademy.com/product/mastering-herbal-formulation-course-how-to-combine-herbs/