I had been looking around for a cheap and easy way to get out of writing my own Targeted Channel tutorial (I despise writing documents like this). Write a little, alt-tab to the portal, take a screen shot, paste into Photoshop, manipulate it, save it, place it in Word, type some more, alt-tab to the portal ....
Having not found one that I liked, I just finished up this one. Its attached if anyone's interested.
It has an Appendix with all the types of channel subsections you can create as examples so people can visualize what they're creating.