Relatively Simple  
   Special Relativity made Relatively Simple offers information and experiments about special relativity.
   http://web.wt.net/~cbenton/relativity.htm

C-Ship  
   A short overview of special relativity, filled with relativistic ray traced images. Explains relativistic effects using a theoretical spaceship.
   http://www.fourmilab.ch/cship/

Jim Doyle's Special Relativity Pages  
   A growing collection of pages on special relativity, including Special Relativity in under 15 Minutes!
   http://www.btinternet.com/~j.doyle/SR/sr1.htm

How Stuff Works: Special Relativity  
   The major principles of special relativity (SR) are discussed in an accessible way, via 5 segments, to help you understand the lingo and theories involved.
   http://www.howstuffworks.com/relativity.htm

Is Travel Faster Than Light Possible?  
   From: Scientific American: Ask the Experts: Physics
   http://www.sciam.com/askexpert_question.cfm?articleID=000657D8-67D9-1C71-9EB7809EC588F2D7

Minkowski spacetime  
   Minkowski's spacetime concept explained.[PDF]
   http://home.wanadoo.nl/ronald.koster/minkowski.html

Special relativity article  
   From the free encyclopedia Wikipedia.
   http://en.wikipedia.org/wiki/Special_relativity

Special Relativity Lecture Notes  
   A standard introduction to special relativity where explanations are based on pictures called spacetime diagrams.
   http://www.phys.vt.edu/~takeuchi/relativity/notes

Relativistic Contraction  
   Those who teach special relativity consider it a very important exercise to have students decide how to measure the length of a rapidly moving object.
   http://www.ux1.eiu.edu/%7ecfadd/1160/Ch27SpRl/ApLrntz.html

Relativity Tutorial  
   An introduction to relativity using space-time diagrams.
   http://www.astro.ucla.edu/%7ewright/relatvty.htm

How Do You Add Velocities in Special Relativity?  
   Here is the formula for adding velocities in special relativity when motion occurs in a single direction.
   http://math.ucr.edu/home/baez/physics/Relativity/SR/velocity.html

Relativity in its Historical Context  
   The discovery of special relativity was inevitable, given the momentous discoveries that preceded it.
   http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Special_relativity.html

Traveling the universe at constant acceleration  
   Suppose you took a trip across the universe in a spaceship, accelerating all the time at one Earth gravity g. How far would you travel in a given amount of time?
   http://casa.colorado.edu/~ajsh/sr/wheel.html

University Lectures on Special Relativity  
   Lecture notes on Special Relativity, prepared by J. D. Cresser, Department of Physics, Macquarie University. 44 pages. [PDF]
   http://www.physics.mq.edu.au/~jcresser/Phys378/LectureNotes/SpecialRelativityNotes.pdf

Special Relativity  
   This is chapter two of Christoph Schiller's 1000 page walk through the whole of physics, from classical mechanics to relativity, electrodynamics, thermodynamics, quantum theory, nuclear physics and unification. 61 pages. [PDF]
   http://www.motionmountain.net/C-2-CLSC.pdf

Synchronization Gauges and the Principles of Special Relativity  
   There are a few published ‘theories’ that seem to differ from the standard Special Relativity Theory (SRT). These differences are only in the chosen synchronization procedures and are wholly equivalent to SRT in predicting empirical facts. 57 pages. [PDF]
   http://arxiv.org/abs/gr-qc/0409105

Imaginary in all directions  
   There is a preferred algebra of quaternions and complex numbers that is ideally suited to express the equations of special relativity and classical electrodynamics. [PDF]
   http://arxiv.org/PS_cache/math-ph/pdf/0309/0309061.pdf

Quaternions in University-Level Physics Considering Special Relativity  
   The quaternions are an expansion of complex numbers and show close relations to numerous physically fundamental concepts (e.g. Pauli Matrices). [PDF]
   http://arxiv.org/ftp/physics/papers/0308/0308017.pdf

Lorentz Contraction and Accelerated Systems  
   Lorentz contraction in systems undergoing constant proper acceleration is proven to be completely self-consistent in the context of special relativity. [PDF]
   http://arxiv.org/PS_cache/gr-qc/pdf/0301/0301050.pdf

Space Measurements on a Rotating Platform  
   The age-old puzzling problem of Lorentz contraction on a rotating platform, i.e., Ehrenfest's paradox, is explained in its proper mathematical context. [PDF]
   http://arxiv.org/PS_cache/gr-qc/pdf/0309/0309020.pdf

Santa at Nearly the Speed of Light  
   An estimate of the speed and distances covered by Santa Claus on Christmas night. The physics is unassailable. The article is hosted on the Fermi National Accelerator Laboratory website.
   http://www.fnal.gov/pub/ferminews/santa/

Beneath the Foundations of Spacetime  
   Special relativity becomes simple and very convincing when the Lorentz transformation is derived only from Newton's first law of motion and the homogeneity of time. [PDF]
   http://www.everythingimportant.org/relativity/special.pdf

Student understanding of time in special relativity  
   A report on the ineffectiveness of standard university instruction in the concept of time in special relativity by Rachel E. Scherr, Peter S. Shaffer, and Stamatis Vokos. 22 pages. [PDF]
   http://arxiv.org/ftp/physics/papers/0207/0207109.pdf