Is study mat sufficient ?

dont refer study material for  tax paper  and i think for other subjects study material is good .wait for others to answer on the same

Complete reliance on study material is not a good idea. Also refer good reference books. For course length reference from study mat is required.

You may go for the following options regarding reference books for CA PCC/IPCC:

Accounts- Shukla & Grawal

Auditing- VK Agarwal OR Padhuka

Law- Munish Bhandari OR M.P. Vijaykumar

Ethics & Communication- M.P. Vijaykumar OR Padhuka

Costing- S.N. Maheshwari & Padhuka

F.M.- Saxena & Vashist & Padhuka

Taxation-

(i) For Tax Theory refer== T.N.Manoharan/ Girish Ahuja

(ii)For Tax Numerical refer == Dr.Vinod Singhania/

Information Technology- Padhuka or Dinesh Madan notes

Strategic Management- Padhuka

Also refer Scanners and Suggested Answer issued by ICAI for previous year exams and revised them properly.

For some good notes explore CAClubindia forum and share file section. You may also use search facility of club.

thanks for the information

i think study material is enough..

it covers all the concepts..

but ya refering other books with study mat is a good option