Rogelio Garcia book signings Healdsburg 6:30-7:30 p.m., Wednesday, Oct. 2 Acorn Café, 124 Matheson St. Napa 6-7 p.m., Thursday, Oct. 3 Napa Valley Bookmine, 1625 Second St. RSVP requested at napabookmine.com/event Calistoga 6-7:30 p.m., Saturday, Oct. 5 Copperfield’s Books, 1330 Lincoln Ave. RSVP requested at copperfieldsbooks.com/event. Most chefs…