Ok if you like me you'll have a hard time with minecraftwiki's red stone guides. I'll show you some of the easy basic stuff to do to extend your red stone wiring.
I'll make another instructable when i get at least one comment.
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Step 1: The Distance
red stone only takes a signal 15 blocks
This simple repeater ( pic 2 ) will carry the signal 15 more blocks, but will also invert the signal.
To build this place a block run red stone to the top of it. Them on the other side of the block from the wire place red stone torch run your wire from there.
Step 2: Better Repeater
This is a better repeater that wont invert the power.
To build place to blocks, place a red stone torch on the end that get you signal. Place a single red stone wire on the next block then place a red stone torch on the end run wire from there.
Step 3: Vertical Transport
This is if you want to trans port the signal vertically
To build just stack a block place a torch then place a block on to of it and repeat.