Here this will help you learn the rules. It even has pictures. http://www.sudoku.name/rules/en

The most common form of sudoku is a 9 x 9 grid with some numbers filled in. The object of the puzzle is to fill in the blanks of the grid so that each row and each column has each of the digits 1 through 9. The grid is further subdivided into nine 3 x 3 grids: each of these 3 x 3 grids must also contain just one of each digit from 1 through 9. By focusing on the 3x3 grids, you can usually find clues where numbers go very quickly: For e.g. in the example image, you see the digit 8 in the top row of the first 3x3 grid, and in the bottom row of the second 3x3 grid, therefore, the digit 8 must go into the middle row of the third 3x3 grid. (There is only one open spot there, so it is easy to place). Using this kind of logic, you can work your way around the puzzle filling in more blanks. In the second row of 3x3 grids, you can see the digit 1 on the bottom row of the third 3x3 grid; there's a 1 in the middle row of the second 3x3 gird, so a 1 must go into the top row of the first 3x3 grid... however -- there are two open spots. There is a 1 in the first column of the puzzle, another 1 can't go into that column, therefore it must go into the the other open spot. As blanks are filled in, it will become easier to figure out the order of digits in an entire row. Every sudoku puzzle is solvable and has just one solution. Find more puzzles here: http://www.websudoku.com/?level=1

Hello, Check http://www.domo-sudoku.com if you are an absolute beginner. Cheers