It's amazing that there is such excellent free access out here! I am aware of 4 sites , no doubt others know of more?

Lagoa Conservatorio....by the music school.....13 modern-fast computers. Need some id to register on first visit

Lagoa Library.....upstairs , about 4 terminals. Don't go after school hours!

Silves.....pedestrian road parallel to river , about 6 terminals

Monchique.....by the square. about 6 terminals

Others?

Did you look in FAQ?

.....er , no , but these FAQs mainly detail free wi-fi access , & not everyone has a laptop . The indoor facilities I mentioned are excellent in such instances.