There's the good ole' Oblivion classes. Notice how it lists skills to work on if you are that class? I wonder if this will also apply to Skyrim as we make our OWN class considering there will be no preset class of course. Say I want to make an assassin, would the following skills make the best assassin in Skyrim as the link says?
Acrobatics
Alchemy
Blade
Light Armor
Marksman
Security
Sneak
I'm pretty sure security is extinct now in Skyrim, so what would substitute for it? All we can do is assume and speculate as we make our own unique class. But perhaps this is a useful tool for anyone somewhat lost on the subject.