There are a couple of places to find ideas for terracing. One of the easiest, you may already have checked: your neighborhood. Spend some time taking notes on how other people with similar conditions have handled the situation. You'll see what has been successful and what hasn't, what you like and what you don't, and which plants do best in your locale. Second, talk to local landscapers. Dealing with a major hillside usually requires professional help. Even if you don't hire a landscape architect to do the job, it will pay off to have a professional plan in hand. Third, check out the landscaping section at a major bookstore. Most landscaping books include information about slopes and the challenges associated with gardening on them. Although you may not find your exact situation, you'll find ideas that you can apply.