There is a wide variety of instruction manuals from a number of cable suppliers. Here are 2 samples:

http://www.cableorganizer.com/learning-center/how-to/how-to-terminate-RJ45.htm

http://www.wikihow.com/Make-a-Network-Cable

We have found Step 8 in this article provides an excellent illustration of a properly terminated network cable:

http://www.wikihow.com/Make-a-Network-Cable

Here is a picture of a properly terminated network cable:

A common mis-conception is a poorly terminated cable will only affect the device it is connected too. This is incorrect. A poorly terminated cable, stretched cable or damage cable can affect every phone and computer on your network. In rare circumstances a damaged cable may eventually result in the complete failure of a switch or router.

Here are examples of improperly terminated cables: