http://en.tldp.org/LDP/abs/html/index.html - Up-to-date, well written guide to bash scripting

http://www.linuxhelp.net/guides/bashprompt - guide to customizing your bash prompts

http://freebooks.by.ru - Reference on nearly everything computers

http://www.f-prot.com/index.html - Free anti-virus software

http://www.dwheeler.com/oss_fs_why.html - "Why Open Source Software / Free Software (OSS/FS)? Look at the Numbers!"

http://elibrary.fultus.com/technical - a nice link covering linux, freebsd, redhat, and suse

http://forums.mozillazine.org - Firefox Forum

http://www.linuxdevcenter.com/linux/cmd - Alphabetical Directory of Linux Commands

http://www.linuxsurvival.com - 'Try as you Learn' command line tutorials (requires java)

http://loll.sourceforge.net/linux/links - loads of Linux links

www.linux.org.ru - news and other usefull information about Linux OS in Russian