This is the best revision guide to get for Resistant Materials: CGP - Design and Technology - Resistant Materials - OCR Specification

 

Useful Links

• http://www.mr-dt.com/

• http://www.mr-dt.com/materials/main.htm

• www.technologystudent.com

• www.designandtech.com/resistantmaterials

• www.design-technology.info/resistantmaterials

• http://www.bbc.co.uk/news/technology/

• www.design-technology.org/

• http://the-warren.org/

• http://www.designcouncil.org.uk/

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Here is the specification from the exam board which should helps you focus your study.