Welcome to DV!
This is an international community, pretty sure there are Scandinavian falks around.
Internet: Movistar seems to be the most reliable. For 42 EUR a month you get a 10 mbs internet connection, a fixed and a mobile number. This is enough, as the roaming charges with EU are now so low, that there is no point of having multiple numbers. On the other hand you will need a Spanish phone/mobile number, as this is the way any business, etc will/can contact you.
What to do? There are zilions of things to see and do...perhaps you could start to have a dinner at the mar-y-mar restaurant on the promenade, go to the Roman Baths (very close to Manilva) and, if you haven't been, go to Ronda..
A furher suggestion: get somebody for key-holding! This can be handy if you loose your keys, and they will keep an eye on your property on a regular basis. Moreover, they can give you adivise about handymen, etc.