Some great permaculture posters linked to in this post - including zebras in zone 5. How cool...
The BEST site I have seen on the subject! Permaculture Design: Vegetable & Herb Guilds | Permaculture Magazine
* Lovely Greens *: Learning about Permaculture Zones
Permaculture on 1/4 acre with 5 Zones around house
awesome Companion Planting | The WHOot
Permaculture Design Principles
Mandala garden: circular pattern of nested keyhole beds is both beautiful and space-conserving. #livingecology #permacultureinternship
Weeds That Are Good for Your Garden
permaculture design principles
Double spiral garden for herbs. Space saving, beautiful raised beds using no dirt, just sands and composting materials to create new soils. Check craigslist and freecycle.org groups nearby for free used bricks or stones to build it.