Hello and welcome, Caroline! I'm not "local" to Cornwall (I'm an Australian living near London), but my ancestors were Cornish and I love visiting Cornwall. I've enjoyed the first course of SSi Cornish and hope there will be more to come. It's really worth doing.
By the way, for all those here who may be interested, Kowethas an Yeth Kernewek (the Cornish Language Fellowship) have just announced details of next year's Cornish Language Weekend, which will be held in Newquay from 8-10 April 2016. It's for people of all ability levels — complete beginners to fluent speakers — who are interested in the Cornish language, with classes, talks and other activities throughout the weekend.
Would anyone else here like more info? I'm certainly hoping to be there.