Some important links:
Association for Computing Machinery - http://www.acm.org/
Linux.org - http://www.linux.org/
GNU - http://www.gnu.org/
Open Source Initiative - http://opensource.org/
Free Software Foundation - http://www.fsf.org/
OpenStack - http://www.openstack.org/
Apache - http://www.apache.org/
Mozilla - http://www.mozilla.org/en-US/
GitHub - https://github.com/
Computer Science at wikipedia - http://en.wikipedia.org/wiki/Portal:Computer_Science
Python - https://wiki.python.org
Some development Tools
git - http://git-scm.com/
gerrit - https://code.google.com/p/gerrit/
jenkins - http://jenkins-ci.org/
eclipse - https://www.eclipse.org/
vim - http://www.vim.org/
Node - http://nodejs.org/
Gradle - https://gradle.org/
Groovy - http://www.groovy-lang.org/
Slack - https://api.slack.com/
Some versions of Linux
distributions - http://en.wikipedia.org/wiki/Linux_distributions
ubuntu - http://www.ubuntu.com/
Some educational links:
ISU Scholarships - https://www.admissions.iastate.edu/award_calc/freshman.php
CodingBat - http://codingbat.com/
William Stallings - http://williamstallings.com/