Algorithm for Black Box Global Optimization - A model-free global optimization algorithm exploits objective function values predicted via the Regularized Global Approximation on an irregular set of experimental data. - http://web.ift.uib.no/~antonych/RGA0.html
OR Tutorial Notes - A set of tutorial notes giving an introduction to operations research from J E Beasley at Imperial College in London. - http://people.brunel.ac.uk/~mastjjb/jeb/or/contents.html
A Tutorial on Integer - A good source to learn Integer Optimization solution algorithms and their applications. - http://www.informs.org/Resources/
Opt-Net - Forum for the optimization community. - http://optnet.itwm.fhg.de/opt-net/
An Introduction to Queueing Systems - Web pages for textbook on queueing systems containing - (a) Sample Sections (b) Slides for Lectures (c) Solution Manual (d) Sample Tests and Solutions (e) Additional queueing related material - http://home.iitk.ac.in/~skb/qbook/qbook.html
IFORS Tutorial - Interactive modules on topics in Operations Research and Management Science topics. - http://www.ifors.ms.unimelb.edu.au/tutorial/
Algorithms, Data Structures, and Problems - A good collection of keywords, definition, and links to further information and implementations. - http://www.nist.gov/dads/terms.html
Archives of ORNET@JISCMAIL.AC.UK - Searchable archive of an email forum for people in the Operational Research community to exchange ideas. - http://www.jiscmail.ac.uk/lists/ornet.html
NEOS Guide - A guide to optimization including software, and case studies. - http://www-fp.mcs.anl.gov/otc/Guide
ORCS-L Discussion List - A list to discuss the topics at the interface of OR/MS and Computer Science. - http://orcs.bus.okstate.edu/orcs-l
The Field of Decision Analysis - Web-based educational and reference materials pertaining to decision analysis. - http://faculty.fuqua.duke.edu/daweb/dafield.htm
Linear Programming FAQs - From the newsgroup sci.op-research, maintained at the Optimization Technology Center of Northwestern University and Argonne National Laboratory. - http://www-unix.mcs.anl.gov/otc/Guide/faq/linear-programming-faq.html
Nonlinear Programming FAQs - From the newsgroup sci.op-research. Includes links to other related tutorials and FAQs. - http://www-unix.mcs.anl.gov/otc/Guide/faq/nonlinear-programming-faq.html