??? ???? ? ?? ??? ? ???????. ??? ???? ???? ?? ?? ????? ???? ????. ?? ???? ????? ???? ???? ?? ???? ???? ?? ?? ?????.Google Adwords and many other SEM companies supply in-depth tutorials on how to use their SEM applications successfully, and so they’re worth experiencing if you want to spend dollars on SEM.In lesson 2, you’ll grasp the importance