Your real preparation should be based on books - your own graduation text/reference books as well as the guide books available.
Prep book for IES General Ability Test (200 marks):
I.E.S. General Ability (Topic Wise Solved Papers) by G K Publishers.List Price: Rs.195; Offer Price: Rs.167; Discount: Rs. 28 (14%).
Chapter-wise Solved PapersIES English & General Ability by Priyanka Ahuja, Chauhan Publisher: Arihant
List Price: Rs.125; Offer Price: Rs.116; Discount: Rs.9 (7%)
Prep Book for IES Exam (Civil) Objective Test Papers (400 marks):
IES Civil Engineering Guide by Mittal, Publisher: GKList Price: Rs.595; Offer Price: Rs.446; Discount: Rs.149 (25%)
IES : Civil Engineering Objective Solved Paper-I by Made Easy Team
List Price: Rs.375; Offer Price: Rs.326; Discount: Rs.49 (13%)
IES-2012 Civil Engineering Objective Solved Paper-II by Made Easy
List Price: Rs.375; Offer Price: Rs.359; Discount: Rs.16 (4%)
IES Civil Engg. (Topic Wise Solved Papers) by G K Publishers.
List Price: Rs.350; Offer Price: Rs.300; Discount: Rs.50 (14%)
Prep Book for IES Exam (Civil) Conventional Test Papers (400 marks):
IES-2012 Civil Engineering Conventional Solved Papers (1995-2011) by Made Easy Publications
List Price: Rs.400; Offer Price: Rs.335; Discount: Rs.65 (16%)
Topic-wise reference books for IES Exam (Civil):
Strength of Materials by Gere and Temoshenko, B C Punamia
Strength of Materials by Gere and Temoshenko, B C Punamia
Structural Analysis by Negi, S Ramamurtham, C K Vang
Reinforced Concrete Structures by Punamia & Jain, H J Shah
Steel Structures by Duggal
Soil Mechanics & Foundation Engg. by Ranjan & Rao, Venkat Ramaiha, S K Garg
Fluid Mechanics and Hydraulics by Modi & Seth, R K Bansal, Subramanyam
Hydrology by Subramanyam
Irrigation by S K Garg
Highway Engg. by Khanna & Jasto, Kadiyali
Hope above study materials (Exam pattern, syllabus, sample papers & books) for the IES exam helps you in your preparation for the exam. I would post more materials as and when I can spot them. Therefore, please keep visiting this blog..