The people in the area basically speak the same dialect as in Antioquia. Soon you'll recognize that the word "pues" can be used in every sentence.
As in entire Colombia: by buses of all sizes you can reach every point.
Stay in one of the touristic "fincas" where you can do horse riding or swimming.
Go to the "El Parque del Café" where you can see different fauna, vegetation. You can also see there some typical dances and enjoy the nice weather.
In some of the remote areas of the Los Nevados park there is guerrilla presence. Usually they don't harm tourists.