hey hey bluz4frank
known for embroidery linens with colorful flower motifs, lace, wicker, pottery, local products made from local things. curious shaped chimneys on rural locals homes, colorful churches, "theatres" of the holy ghost with fancy decorations and shapes. with quite a bit of azorean people immigraing to the big island of hawaii to work on sugar plantations (my grandfather was one of them) we love the holy ghost feast celebrations every year at the church for fun food and entertainment. heard about the wines but didn't know about the moonshine which sounds interesting to learn about.
forgetsimeday.com is a blog you can read about the island.
getyourguide.com (terceira in search)
azores: terceira island full day tour
terceira island: 8 hour wine and moonshine tour
read up about what's involved in each tour
azorbus.com read up on tours they give.
stop at a store (mercado) with food, shops, cafes, interesting things, i like to look at packaged envelopes of spices or how to cook this item. (atlantic souvenir or duque de braganca in angra do heroismo)
hope this gives you some ideas.