Wool fibre naturally sheds everyday dirt and odours. Simply shaking out and airing a woollen item will freshen it right up, ready for more use. For heavier soil or stains, a cool soak to loosen then a couple of rinses will flush the fibres clean.
Crafts are learned by doing, by demonstration and practice, the learning never stops. My spinning friend Kay Anderson said “I like to have a very good teacher when I start, and then I don’t have to unlearn mistakes”