Opinions vary. Some say to take a flour and water sponge and leave it out to collect the natural yeast of your area. Others use wines and beers to start with those yeasts. And others use a standard bread dough sponge and let it sour/age.
Ask around, you'll find someone with a starter who will share some with you and teach its finer points of care and feeding.
Phil
Ask around, you'll find someone with a starter who will share some with you and teach its finer points of care and feeding.
Phil