Enjoy your time in the field or hunting plants in your locality. If you struggle to find plants, using the Properties (and in the full course, Energetics) will help you choose viable substitutes. All the herbs used in the course are regarded as invasive weeds across the globe, so shouldn’t be far from you, check neglected areas, under hedgerows, woodlands, abandoned places, the untidiest corner of the yard or near the muck heap, and deep verges on quiet lanes (not traffic dense roads, think fumes on the plants).
If you are still stuck, join the Equine Academy student’s group on Facebook, put on a swaps plea, and other students might very well be able to help you out.
The full course will be available shortly.