DIY Home Automation is an awesome, but challenging project with lots of details. This index gives links that may help those at the beginning stages (Gateway & first end node.) Early links below give overviews of the project, a step-by-step Building tutorial, & sources for key parts. The next post lists threads where we helped beginners get started. Then posts point to hardware hints & Arduino basics. These links may address much of your questions & concerns & feeling you're the only one to hit speed bumps.