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I tend to always start with optimizing my homepage for the search term with the highest volume because homepages almost always have the most authority. So in this case, "immobilien countryname". Then create a main page for "apartments", another for "houses", another for "single family homes", and another for "properties".  I know I told you to optimize the homepage for "property countryname" but from a usability standpoint you'll want a property page that functions just like the apartments and houses page and not like a homepage. As far as picking keywords to optimize for...just use the keywords that are grammatically correct and you can still rank for the different versions of that phrase that are not grammatically correct. Type of content to include: Just think about what someone typing in that phrase would expect to see or would want answered and include that content. **Biggest thing to remember: **Just start! Create pages and add content. Improve upon it over time. Monitor your rankings for all the phrases and test different title tags and content paragraphs to see what gets you the best rankings. All the while, spend time building links. Boyd