ICT , NEED URGENT ADVICE

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I will be taking Applied Information and communication technology (ICT) for AS levels, I will be self-studying this subject.
If anybody who takes ICT is reading this , could you please advice me as to what textbook to buy for ICT , so that I can study this subject efficiently in order to answer Paper 1 and Paper 2 of AS Level.

Will really appreciate an urgent reply
Thanks in advance.

 

[Nibz]

This is the CIE endorsed book book for Applied ICT : Applied ICT for A and AS Level by Brown, G and Sargent, B [Cambridge University Press]