Well, you don't have a lack of space! LOL What do you like? How much money/time are you willing to invest? What 'purpose' will you yard be for? Entertaining, drawing wildlife, general use, ???

As you may have noticed, posts on the gallery section usually don't get a lot of traffic/responses.

That being said, it's difficult to start out with nothing to work with. Try to gain some ideas or inspiration from other gardens or landscapes, through magazines, shows, books, internet (practically any sort of media). Once you have a collection of what you like, you can then identify what makes them appealing to you and then apply those to your own yard.

-Audric

I think Bonsai's right - first try to identify what kind of gardens you like, formal, modern, cottage, etc. then you can work on narrowing down your plant types and lastly focus on where every thing's gonna go!