Analytic Number Theory  
   Lecture Notes by Noam Elkies, Harvard, 1998.
   http://www.math.harvard.edu/~elkies/M259.98/index.html

Riemann's Zeta function  
   Notes by Xavier Gourdon and Pascal Sebah.
   http://numbers.computation.free.fr/Constants/Miscellaneous/zeta.html

Riemann's Paper  
   "Ueber die Anzahl der Primzahlen unter einer gegebenen Grösse" and in translation.
   http://www.maths.tcd.ie/pub/HistMath/People/Riemann/Zeta/

Some Zeta-related Functions  
   Recent studies on Zeta functions.
   http://www.geocities.com/CapeCanaveral/Hangar/4577/elmelik.htm

Vinogradov's Three Primes Theorem  
   Lecture notes on the home page of Timothy Gowers (DVI format).
   http://www.dpmms.cam.ac.uk/~wtg10/

A Prime Case of Chaos  
   Article from Volume 4 of What's Happening in the Mathematical Sciences by Barry Cipra, describing conjectural links between the Riemann zeta function and chaotic quantum-mechanical systems.
   http://www.ams.org/new-in-math/cover/prime-chaos.html

Critical Strip Explorer  
   Java applet developed by Raymond Manzoni for viewing zeta in the complex plane.
   http://www.maths.ex.ac.uk/~mwatkins/zeta/CSExplorer/CSExplorer.htm

A Three-dimensional Model of the zeta Function  
   Made on the rapid prototype machine at SDSC.
   http://www.sdsc.edu/tmf/Examples/Rie/rie.html

The Mark of Zeta  
   A MathTrek article by Ivars Peterson.
   http://www.maa.org/mathland/mathtrek_6_21_99.html

Zeta Values on the Web  
   A bibliography compiled by Wadim Zudilin on values of the zeta function with links to those papers available on-line.
   http://wain.mi.ras.ru/zw/

X-Ray of Riemann's Zeta Function  
   Graphic visualisation of zeta by Juan Arias de Reyna Martínez, University of Seville.
   http://www.pdipas.us.es/a/arias/Publications.html

Not Always Buried Deep  
   Notes on Analytic and Combinatorial Number Theory, originally written for the 2003 Ross Summer Mathematics Program, by Paul Pollack.
   http://www.princeton.edu/~ppollack/notes/

Directory of All Known Zeta Functions  
   A directory of websites maintained by Matthew Watkins on the topic of The Riemann Hypothesis and Zeta Function.
   http://www.maths.ex.ac.uk/~mwatkins/zeta/directoryofzetafunctions.htm

Ten Trillion Zeta Zeros  
   A Math Games article by Ed Pegg junior on Xavier Gourdon's computations.
   http://www.maa.org/editorial/mathgames/mathgames_10_18_04.html

Inexplicable Secrets of Creation  
   Zeta function site by Matthew Watkins.
   http://www.maths.ex.ac.uk/~mwatkins/isoc/

Irrationality and Transcendence  
   Lecture notes (PS) by David Angell, NSW.
   http://web.maths.unsw.edu.au/~angell/5535/