Linux General:
http://www-106.ibm.com/developerworks/linux/
http://www.linuxjournal.com/
http://www.linux-mag.com/
http://www.linuxhq.com/

 

Programming:

http://www.advancedlinuxprogramming.com/

http://www.linux-mag.com/depts/compile.html

http://cpearls.sourceforge.net/

http://www.function-pointer.org/

http://mitpress.mit.edu/sicp/full-text/book/book.html

http://www.paulgraham.com/index.html

 

Bash:

http://www.tldp.org/LDP/abs/html/

 

GNU Manuals Online:
http://www.gnu.org/manual/
http://www.gnu.org/manual/coreutils-4.5.4/html_mono/coreutils.html

 

proc file system:
http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/ref-guide/ch-proc.html

 

sed:
        http://sed.sourceforge.net/
        http://sed.sourceforge.net/grabbag/tutorials/oneliners.txt
        http://www-106.ibm.com/developerworks/linux/library/l-sed1.html
        http://www-106.ibm.com/developerworks/linux/library/l-sed2.html

 

ext3:
[Cannot recover files on ext3 file system]
http://batleth.sapienti-sat.org/projects/FAQs/ext3-faq.html
[Recover files]
http://www.tldp.org/HOWTO/mini/Ext2fs-Undeletion.html

 

Microsoft:
http://msdn.microsoft.com/library/default.asp?url=/nhp/default.asp?contentid=28000550
[Excel older]
http://www.microsoft.com/officedev/articles/Opg/004/004.htm
[Building an RTD compenent in VB.NET for Excel]
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnexcl2k2/html/odc_xlrtdvbnet.asp

[VB]
http://www.xml.com/pub/rg/_NET_Tutorials
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnvssamp/html/vb_VBSamplesTop.asp