Books for IPCC

Hi

i am going to buy these books-

costing & FM - Sharavana Parsad

TAX - Singhania and singhania

IT - only module not taking any books

Accounting - Sharavana Parsad/ PC Tulsian

Law - Munish Bhandhari

Auditing - Sharavana Parsad

plz guide & share your experience that these books are best for IPCC or not...and when should i buy scanners/ compilers for both groups...and plz tell me books for Auditing standards & accounting standards.

thanks