Below are some links to sites that provide great guides to skilling. List is ordered with my favourite first.
http://www.zybez.net/skills.php
http://runescape.salmoneus.net/skills.html
http://www.runehq.com/RHQSkills.php
The guides do not always show the absolute fastest way to level. For starters you will see they don't always make the same recommendations. But they are always going to give you very good XP per hour.
I will also be posting some of my own additional tips. I quite often time different methods of training to see which is the most effective
If you find another good site then please reply and add it to this thread.