Online-Bücher www.computer-literatur.de
www.dokuwelt.de
www.ebooks4free.net/Manuals.htm
ebookdirectory.com/search/Computer_L2K_Internet/
www.galileocomputing.de/katalog/openbook
www.highscore.de/buecher.html
www.linkwerk.com/pub/
www.maththinking.com/boat/computerbooks.html
www.mmg.vmei.acad.bg/mmgebooks.html
www.online-tutorial.de
www.onlinetutorials.de
www.oreilly.com/openbook
www.freetechbooks.com
www.w3schools.com
www.windowsitlibrary.com/ebooks/
Offline lesen (Webspider) www.xaldon.de