Are these two books enough for law and tax?

i am refeering to

for  Law -Manish Bhandari...

 and forTax-Girish ahuja.

Is it ok if i do the  whoole law ethics and communication portion from this book,or this book is only good for Company law?

And what about the girish ahuja book?

and one more question whichis not related to above

Are three months enough to clear Ipcc both groups?

thank you

koi toh answer karo plz