Security
http://dev-sec.io/index.html
https://www.inspec.io/
https://kali.training/
https://github.com/laramies/theHarvester
https://modmyi.com/content/22198-myriam-security-challenges-exploit-education-tool-scores-update.html
Linux
https://www.cyberciti.biz/faq/how-to-movemigrate-lxd-vm-to-another-host-on-linux/
https://www.vultr.com/docs/how-to-deploy-google-bbr-on-centos-7
https://serversforhackers.com/s/docker-in-development
https://learn.chef.io/
https://dnsdiag.org
Oracle Big Data
http://www.oracle.com/technetwork/database/bigdata-appliance/oracle-bigdatalite-2104726.html#movieplex
http://www.oracle.com/partners/en/knowledge-zone/applications/big-data-study-guide-3032976.pdf
https://apexapps.oracle.com/pls/apex/f?p=44785:141:0::NO:141:P141_PAGE_ID,P141_SECTION_ID:27,615
https://pythonhosted.org/python-hpilo/index.html
Exadata
https://karlarao.wordpress.com/2012/05/14/iosaturationtoolkit-v2-with-iorm-and-awesome-text-graph/
http://karlarao.tiddlyspot.com/#%5B%5Bawr_iowlexa.sql%20-%20Hierarchy%20of%20Exadata%20IO%5D%5D
http://www.databasejournal.com/features/oracle/monitoring-smart-flash-cache-activity-on-oracle-exadata.html
Geography
Coding
https://www.golang-book.com/books/intro
Open Source Projects
https://dapulse.com/
https://www.passbolt.com/
Music
http://www.themetimeradio.com/
http://lifehacker.com/learn-the-basics-of-music-theory-with-this-interactive-1796329461
Weather
https://www.ventusky.com