https://www.lynda.com/portal/sip?org=mdpls.org
http://www.afterhoursprogramming.com/
https://automatetheboringstuff.com/
http://learnpythonthehardway.org/book/
https://msdn.microsoft.com/en-us/library/60ecse8t(v=vs.80).aspx
http://www.cs.berkeley.edu/~mavam/teaching/cs161-sp11/gdb-refcard.pdf
https://www.sourceware.org/gdb/current/onlinedocs/gdb.html
http://acc6.its.brooklyn.cuny.edu/~gurwitz/core5/binquiz.html
http://www.free-test-online.com/binary/binary2decimal.htm
http://www.cs.ucsb.edu/~pconrad/cs16/topics/numberConversions/
http://forums.cisco.com/CertCom/game/binary_game_page.htm
https://www.khanacademy.org/computing/computer-science/cryptography
https://www.khanacademy.org/computing/hour-of-code/hour-of-sql/v/welcome-to-sq
Softwares:
https://notepad-plus-plus.org/
http://bluefish.openoffice.nl/index.html
https://code.visualstudio.com/
https://www.apachefriends.org/index.html