PubMed: For finding papers or exploring genomes
Protein Data Bank: For finding protein structures
PyMOL: For viewing protein structures
ExPASy: For finding out more information about a protein or DNA sequence
The NSF Center for Sustainable Nanotechnology Blog & Podcast: Fun and informative information on sustainable, beneficial nanotech
Nanotechnology 101: The National Nanotechnology Initiative introduction to nanotechnology
Discover Nano: Northwestern University’s intro to nanoscience
NanoComposix: A valuable resource for nanomaterials.
Advice for working as an undergraduate in a research lab
ACS planning for graduate school
Ten simple rules to doing your best research, giving a poster presentation, and oral presentations.
And, G.M. Whitesides' time tested advice for writing a scientific research paper that can also be useful in reading papers (read it, or see his video)
On the importance of "grit" to success and the importance of stupidity in research
Admitting, properly responding to and thinking about the importance of mistakes