sudoku?? tips? 10 pts?

ok so iv been playing sudoku alot, i love, but i cant get past the easy level. i can beat easy everytime, without any difficultys, but i cant win any on level 2, is there any tips or anything someone has for me on how to play or anything???

Related posts:

1. Any tips from Sudoku fans?
2. Sudoku – Tips For Easy Play
3. Can you give me some tips on playing sudoku ?
4. Sudoku Solutions – Some Helpful Tips For Beginners
5. What are some easy tips for Sudoku?