Total re-specing is mostly done for priests, which up to lvl 50 - 55 play easier as 'shadowpriest', and beyond that are better as prime healers. At that level it takes about 50 gold.
At your level, it will be less, as you do not have to 'forget' everything of your feral form (the cat form is useful for its stealth ability at least, even if you do not combat with it)
It is done with your class trainer
In times of crisis it is of the utmost importance not to lose your head (Marie Antoinette)
