Tips for Suduko Please

i am not so familiar with this game but so far as i know,The Sudoku puzzle consists of a series of grids. The grids include one large 9 x 9 grid that houses, nine 3 x 3 smaller grids. The purpose of the game is to place a number from 1-9 in each of the grid cells. You don't have to worry about finding the sum of the numbers of the rows, columns, like in Magic Squares. No addition is involved; however there are three conditions that rely on each other and must be followed so you can visit ; http://www.grandmatrix.com hope will help.