Learning the language is a given, you simply must if you wish to fit into the local community and in this day of immigration issues it helps you with those that are maybe against the idea, better when you can speak their language and can see that youre as friendly and 'normal' as they are.
Theres a prog on Spanish hospitals in the tourist hotspots and you would think that there would be more English speaking Spanish medical staff in these areas and its quite the reverse so speaking some of the language is very important should a medical emergency arise.
Find a good tapas bar and ingratiate yourself into it
Sure talk , go to any expat places or events but i think the local places will help you build relationships with the locals youre going to be neighbors with. In fact you could ask your immediate neighbors if they know of any good taverns and tapas places.
I think one of the problems i see with people coming in is they form little communities of their own, little forts in the wilderness and all its really been shown to do is isolate you further from the locals. Sets up a 'them and us' mentality
1976 Raleigh Chipper,1991 Muddy Fox Adventurer, 1992 Raleigh Diablo ,1992 Rudy Project, 1995 Cannondale M200 ,1997 Santa Cruz Tazmon ,1997 Specialized Stumpjumper ,1997 Specialized Rockhopper ,1997 Marin Quake 9.0,1998 Marin Pallisade trail ,1998 Raleigh Torus,1999 Orange Clockwork , 2005 Kona Hahanna , 2010 Orange Pure7
The Marvellous Mechanical Hope Collection