The Basics

NASA Abstract Data Service: http://adswww.harvard.edu/
arXiv Preprint Server: http://lanl.arxiv.org/

Professional Organizations

American Astronomical Society: http://www.aas.org/
Canadian Astronomical Society: http://www.casca.ca/

Journals

The Astronomical Journal: http://www.journals.uchicago.edu/AJ/
The Astrophysical Journal: http://www.journals.uchicago.edu/ApJ/
Astronomy and Astrophysics: http://www.aanda.org/
Monthly Notices of the Royal Astronomical Society: http://www.blackwellpublish...

Computing Resources

Numerical Recipes: http://www.nr.com/
Karma: http://www.atnf.csiro.au/computing/software/karma/
Source Extractor for Dummies: http://www-int.stsci.edu/~holwe..

Data Repositories

GATOR @ NASA IPAC: http://irsa.ipac.caltech.edu/applications/Gator/
SDSS Sky Server: http://cas.sdss.org/dr6/en/
Vizier Catalog Service: http://vizier.u-strasbg.fr/

Personal Pages

My Personal Website: http://www.mubdirahman.com/