Wintering in Frigiliana

I am hoping to spend from November to the beginning of March in Frigiliana. I have not done this before and am a little anxious about it as I am a retiree, traveling alone (but bringing my little miniature Schnauzer). I would love to know what groups there are in the area to link in with for activities. I love swimming, walking, gardening, cooking, cycling, sailing, scuba diving, snorkeling, needle craft, film nights, and I will give any activity a go. I shall be driving from home (Ireland) to Frigiliana so if anyone has any advice on this score I’d be most grateful for any useful tips. 

I have never been to this area of Spain and have no idea what winters are like there so, again, any advice vis a vis clothes to pack etc., would be gratefully received. As I don’t speak Spanish I will need to attend classes in Spanish and presume there are some available in Frigiliana.  As I am bringing my much beloved pooch with me, could you tell me if there is a vet in the area as my little dog is diabetic! Lastly, are ex-pats permitted to do voluntary work while living there?

I look forward to getting some sound advice on any or all of the above if someone has the time. Thank you.

Polly