C++:

IDL Libraries:

• NASA IDL Library Search Tool
• Marc Buie IDL LIbrary
• Eric Deutsch IDL Library List

IDL Other:

• Howdy: IDL Tutorial
• IDL Help Home
• Index of idl_html_help
• David Fanning: 3D Axes
• Steve Dawson: IDL Fonts
• colorbar.pro
• Kuhlen: IDL Vector Fonts

LATEX:

• Scott Pakin: Comprehensive Latex Symbol List
• Carlisle: Latex Math Symbol List
• Jenny Williams: Bibtex

Papers:

• ADS
• astro-ph
• Scitation
• APJ at Chicago
• Engineering VIllage: Search for Engineering Papers

Databases:

• NED: NASA/IPAC Extragalactic Database
• NIST Atomic Spectra Database
• VIZIER
• Simbad
• ROSAT
• Citebase