AUDITING BOOK

Hello everybody

First pls. tell me which notes are best for preparing auditing for final level  TIPS or G. Sekhar, Second can anybody breif me what are the major changes in prodfessional ethics I think there is only one change i.e earlier there were 13 clauses in first schedule part 1 and now there are 12, is there any other change pls. tell me. I will be highly obliged.