https://www.hex-rays.com/forum/viewtopic.php?f=6&t=3322

List of scripts:
http://www.openrce.org/downloads/browse/IDA_Scripts
http://old.idapalace.net/idc.html
http://old.idapalace.net/idc2.html
http://old.idapalace.net/idc3.html
http://nah6.com/~itsme/cvs-xdadevtools/ida/idcscripts/
http://itsme.home.xs4all.nl/projects/id ... ripts.html
http://old.idapalace.net/misc.html
https://github.com/snarez/ida-efiutils
..

Plugins:
http://old.idapalace.net/plugins.html
http://old.idapalace.net/plugins2.html
http://old.idapalace.net/plugins3.html
http://old.idapalace.net/plugins4.html
http://old.idapalace.net/plugins5.html
http://old.idapalace.net/plugins6.html
http://old.idapalace.net/plugins7.html
http://old.idapalace.net/plugins8.html
http://www.openrce.org/downloads/browse/IDA_Plugins
http://itsme.home.xs4all.nl/projects/ida/
https://github.com/aaronportnoy/toolbag/
http://www.openrce.org/blog/view/1344/C ... DA_plug-in
..

Related projects (google code, github, sourceforge):
https://code.google.com/p/optimice/
https://code.google.com/p/pyhexrays/
https://code.google.com/p/idapython/
https://github.com/nikolai-r/ida-filter ... /filter.py
..

Books:
http://www.amazon.com/IDA-Pro-Book-Unof ... 1593272898
http://www.amazon.com/Reverse-Engineeri ... 159749237X
..

Video tutorials:
http://woodmann.com/TiGa/idaseries.html
..