Ca final studies help

I have my attempt in nov 2015. I have started coaching for fr, sfm, cost. Will start qt dt n idt in may. Now I have 3 hours a day to study other stuff. So want to start theory. Can we do law audit n isca self. From module? Please also tell can dt and idt be done through self? Please also trll me is it necessary to join face to face classes? Please help me ..