It depends if you mean secrets or glitches. In all of the Zelda games theres always loads of secrets to find like upgrades for weapons and extra hearts etc. However, theres usually very few glitches in games made by Nintendo. I've played the Wind Waker loads of times and as far as i can think i dont know of any glitches within the game.
On a seperate note, I absolutely love Wind Waker and all of the Zelda games I've played. If you havent played any of the other Zelda games, i'd suggest finding The legend of Zelda: Links Awakening (one of my favourite Zelda games), The Minish Cap, or Ocarina of Time, which is one of the most renowned Zelda games.
I know what a glitch is, and i understood the question.
I've played the Wind Waker loads of times and as far as i can think i dont know of any glitches within the game.
Its just in my personal experience ive never come across a Nintendo game that has loads of glitches in comparison to games made by other companies. Maybe its just that ive missed them since im not overly interested in searching them out within games.