Is it necessary to join private coaching classes for cafinal

no dear ..it is not a necessity at all..many pass w/o coaching.i know pppl who have secured rank by doing self studies..all you need i that your basics should be clear,keep updated yourself about the amendments and obviously need to really work hard..

Yes ofcourse it is possible. I did not attend any classes for CA final. The structure of this professional course is actually like distance learning programs offered by various universities.  

Self learning is the best learning. 

Go ahead with your preparations.

Only thing you need is learning discipline. Be confident while entering the exam hall.

Will you please briefly tell me your strategy of self study for Ca final.

I shall be thankful to you for this.