Links

Introduction to shortwave
Der Kurzwellenhörer (de) (1924 Hits) (Shortwave introduction by Franz Chvatal)
Introduction to DXing (en) (3008 Hits) (Marc Vissers introduction to DXing)
Kurze Einführung in die Kurzwelle (de) (2484 Hits) (Not a short, but an extensive introduction, also with notes about current shortwave receivers)
Leviathan's DXing Page (de) (1805 Hits) (Extensive introduction into shortwave)
Romanistik Erlangen: Kurzwelle (de) (1640 Hits) (Well made shortwave introduction with technical details)
Was ist Rundfunkfernempfang? (de) (1895 Hits) (Well made DXing starters page)

SW News
Das Medienmagazin: AM News (de) (1657 Hits) (The latest AM news from the "Medienmagazin" of Radio eins)
KWeinführung (de) (1893 Hits) (A little shortwave introduction)
Weltweiter Rundfunk: News (de) (1723 Hits) (AM news)

Info pages
Shortwave Pirates (en) (1738 Hits) (Nice page about not legal shortwave broadcasters)

Lists
Basel DX Daily Logbook (en) (1677 Hits) (up-to-date tropical band logs)
Danish Shortwave Club International SW Tips (en) (1860 Hits) (Bleeding edge shortwave loggings)
HFRadio.org: shortwave database (en) (2713 Hits) (Interactive frequency list for all current shortwave broadcasters)
The Latest Shortwave Loggings On The Net (en) (2354 Hits) (Very interesting and recent shortwave logs from the UK)

private pages of DXers
The World on Shortwave (de) (en) (0 Hits) (complete private page, even with historic logbook)
DX-Seite Rudolf Sonntag (de) (1854 Hits) (Infos about current and past shortwave stations and many QSL cards)
dxradio.de (de) (3466 Hits) (interesting pages of a longtime DXer)
Fenu-Radio (de) (2522 Hits) (Very interesting page of a fellow DXer with lots of information about receivers)
Kurzwelle Hören (de) (2173 Hits) (Bodo Kirtz' shortwave pages)
MarkDX (de) (2129 Hits) (a german "radio platform from the lower rhine")
Mein Hobby (de) (2038 Hits) (Shortwave- and Korea fan)
Ratzer.at - Informationen zum Kurzwellenhobby (de) (2104 Hits) (Homepage of Christoph Ratzer, who owns the german A-DX mailinglist. Very interesting test reports and current reception tips.)
Rinkersoft (de) (1734 Hits) (Alfred Ditzlers shortwave pages)