VW provides a couple of very interessting books in pdf format.

These books are available in english language also.

To celebrate the 40th anniversary of the 411 VW there is the first brochure for download:

Barndoor

A registry and a heavy load of information dealing with this very first series of VW buses (1950-1955).

Languages:
english

Carsten Classics Volkswagenpages

Thies is my number one ressource in questions of accessories for the VW Beetle. The design may be a little bit old fashioned, but the shown items are first class (vice versa for a lot of pages nowadays). Nice: Hebmüller restauration

Languages:
german, english

Uralt VW

This is the home of the revival of the Gute Fahrt 100.000km meeting - Thanks alot for this :). In addition some very nice items are on display.

Languages:
german, english

Karmann 1952

Karmann VW Beetle Convertibles of the first series from 1949-1953. It features a registry and nice picturs and informations.

Languages:
german, english

The Samba

A lot of classifieds, infos, pictures and a large forum.

Languages:
english

beetlebooks

beetlebooks shows the private collection of one VW maniac. Friends of aircooled VW models will find a wide range of literature.

Languages:
german, english