My recommendation for the research students:

• GradHacker: http://www.gradhacker.org/
• PhD Talk: http://phdtalk.blogspot.com/
• The Research Whisperer: http://theresearchwhisperer.wordpress.com/
• The Thesis Whisperer: http://thesiswhisperer.com/
• Opiniomics: http://biomickwatson.wordpress.com/
• Hyndsight: http://robjhyndman.com/hyndsight