This is the area's oldest public library--it started sometime in the late 1800s. The library has floor to ceiling windows that face east so the view from the main floor is of the Intracoastal and beautiful Palm Beach.
They have ongoing classes for all ages (toddlers up to senior citizens), just stop by the library for a schedule or call ahead. They offer free use of computers and the Internet for up to one hour a day per person and 10 free black and white print outs.
If you park at the Banyan parking garage, they'll even validate your ticket for another free hour (the city provides the first hour free).