Gardening: Rain Barrels/Watering
How to Build a Rain Barrel, Plus Care and Maintenance - Collect Rainwater for your Yard and Garden
How to Build A Drip Irrigation System For Under $100
Rain Water Harvesting
Drip Irrigation Design Guidelines
Garden Row Snip-n-Drip Soaker System lets you create a convenient watering system for your vegetable garden. No special tools required — just use scissors to cut the hoses to the sizes you need. Snap the fittings in place and you're ready to water.
Build Your Own Self-Watering Planter
2500 gallon rain water collection system
Rainwater harvesting & collection system diagram. This is a pretty nifty system, but rather high tech and I'm not certain I'd like all those plastic modules buried in my yard. I'd be concerned in the long haul with hydrocarbons leaching out of the plastic. I do however like the integration with yard water features and systems.
Lowe's How to Make and Install a Rain Barrel-video (extremely informative, taking you step by step)
How to grow huge tomato plants - bury a PVC pipe with holes in it for watering
Make a rain barrel from a garbage can.