Bcom(a&f) exam from ignou

I am going to appear for bcom (a& F) From ignou in june 2015. I am confused how can I preapare for the exam .Is there any guide book or text book for preaparing the exam.Currently I am reading from study material provided by IGNOU.But while reading material I find it very lengthy and confusing. hence please suggest me how I can preapare ????? My codes are AED 01 FEG 1 feg 2 bege 104 bshf 101 eco 13, pls tell me