Circuits – Simulated

If you want go deeper with Minecraft and circuits, here are some suggested resources for you. 

FIRST
Go to this web page and watch the video in the expanded “Basics” section – http://www.minecraftforum.net/topic/1736851-ultimate-redstone-guide/

In particular understand how the repeater works.

SECOND
Watch the advanced topics video and understand how a comparator works.

THIRD
Open minecraft and launch the Redstone Guide world.  If you don’t have it, the author provides a link at the end of the opening paragraph on the webpage.  The link is posted above in the do first section.

Explore and play around learning with the concepts.