Starting a new life in Spain can be yours if you carefully plan everything buying a house on the Costa Blanca is something that will demand all your attention.
Be prepared or prepare to fail, those words should be in your mind during the entire buying process, there is a guideline that is necessary to follow during that period :

Always ask for legal advice
Never rush thing out
Have a clear goal in mind, because it can condition a lot of thing. Do you want a house just for holiday that will be for rent during the rest of the year, do you want to live on the coast or inland, do you want to be near a golf course, do you want to be in the expat community or in the real Spain, do you plan to resale the house in the future. Once you have a clear goal in mind you can proceed to look for a room, the best advice is to go there for 6 months , then you will have a clear ideas of the place you want to live. Below is a list of place, you may want to consider in the province of Alicante on the Costa Blanca :

La marina, Elche/Elx, Alicante ciudad (San Juan, El Campello), Calpe , Denia , Javea/Xabea, Torrevieja, Altea, Benissa, Alcoy, Orihuela, Ondara, Benidorm , Villajosoya

Once you know, where you want to live, learn about the buying process and the people involved.