I detected the British 'accent' in your question. Only those with a British influence call it a 'car park'. Lovely! You made me smile!
Now to answer your question. Find yourself a good real estate agent and do exactly what they tell you. The agent will know good lenders in the local area so you can be qualified to get a mortgage. They will know of homes for sale that are exactly what you want, and they will know exactly how to go about helping you to purchase that home.