1. Soft Skills: https://www.mindtools.com/

2. Engineering: http://www.engineeringtoolbox.com/
                               http://www.epri.com/Pages/Default.aspx
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3. Plant and equipment reliability improvement: http://www.lifetime-reliability.com/cms/

4. Safety: http://www.hse.gov.uk/index.htm

5. Journal for engineering Research and practice:   http://www.emeraldinsight.com/

6. Management and business administration:   http://www.netmba.com/