Where do i buy a skill reset? I accidently added a point to skill i didnt want now im stuck with it. Help would be much appreciated.

in Auction House .. cost a lot of Zeni .. i want one too .. and a lvl up to 33 as well .. and a 30 percentage more exp for 2 hours.. all in Auction House though,, cheapest i saw was 10 milion.. if your below lvl 30 you dont need the book yet though.. I think your aware of that but just in case

For level 30 this cost only 20-30 Zen.

whats the difference between a green and a bron skill reset book?

Green Book resets all of the SP used on skills.
Brown Book resets only 1 SP of your choice.