This will depend on your pace and whether you sit down to craft in longer sessions or short bite-sized chunks. But overall the beginner's embroidery course will take you about 6 hours total (from starting to finishing your first pattern). Then each additional pattern will likely take you around 4-6 hours.
I've designed the workshops so that you can participate while watching each lesson, and complete a key section of the pattern along with me each day. Each lesson will take approximately 1 hour.