Online introductions to Wittgenstein

Ray Monk 'Ludwig Wittgenstein' Encyclopaedia Britannica Online
David Pears 'Wittgenstein' from The Blackwell Companion to Philosophy (1996)
Short biography of Wittgenstein MacTutor (J. O'Connor & F. Robertson)
A biographical Sketch (Cambridge Wittgenstein Archive)
Stanford Encyclopedia of Philosophy (A. Biletzki & A. Matar)
The Internet Encyclopedia of Philosophy (D.J. Richter)
B.W. Carver website, source of many Wittgenstein materials


Wittgenstein archives

Wittgenstein Source
Wittgenstein Archives, Bergen
Wittgenstein Archives, Cambridge
List of the original Wittgenstein papers deposited at Trinity College, Cambridge
Visual concordance to Wittgenstein's published works

Wittgenstein texts online

Copyright clearance at these resources rests with the sites referred to and the BWS is not responsible for content at these links.

Review of Coffey's The Science of Logic
Notes on Logic
Notebooks, 1914 (German)
Tractatus (Ogden)
Tractatus (Pears-McGuinness)
Tractatus (Richter)
Tractatus (German)
Some Remarks on Logical Form
Lecture on Ethics
Lectures, 1932-33 (Part I of Wittgenstein's Lectures: Cambridge, 1932-35)
Blue Book
Brown Book
Philosophical Investigations
Philosophical Investigations (German)
On Certainty
On Certainty (German)
Wittgenstein Source

Studying Wittgenstein

Taught MA on Wittgenstein at Swansea

Other societies and organisations 

Austrian Ludwig Wittgenstein Society (ALWS)
Hungarian Wittgenstein Society
International German Ludwig Wittgenstein 
Society (ILWG)
North American Wittgenstein Society (NAWS)
Nordic Wittgenstein Society (NWS)
Tracing Wittgenstein: Digital Explorations
Centre for Wittgenstein Studies, Swansea University
The Wittgenstein Research Centre, UEA

Other links

Wittgenstein News
The Wittgenstein Workshop, at the University of Chicago