Here is list of my favorite AI based hyperlinks.

AAAI - The Association for the Advancement of Artificial Intelligence.
AA MAS – AA MAS Conference site.
AIMA – The AI Modern Approach site.
Genetic Programming – Dr. Koza’s GP website.
IJCAI – International Joint Conference on Artificial Intelligence
JAIR – The Journal of Artificial Intelligence Research
JMLR – The Journal of Machine Learning Research
SIG EVO – The ACM Special Interest Group on Evolution Computing.

Tools

CMU Common Lisp
SWI Prolog
Orange - Data Mining Tool from the University of Ljubljana
ECJ - Java-based Evolutionary Computation Research System

Knowledge Representation

Propositional Calculus - Wikipedia subject on Propositional calculus – Excellent.
Predicate calculus - Wikipedia subject on First Order or Predicate calculus.

Education

Stanford University
Stanford University on YouTube – A number of video course are available
Machine Learning CS229 – taught by Dr. Andrew Ng.
MIT Open Courseware – Over 1800 courses are available.