Basic task scheduling

http://www.howtogeek.com/101288/how-to-schedule-tasks-on-linux-an-introduction-to-crontab-files/

jQuery cheatsheet

http://www.cheatography.com/i3quest/cheat-sheets/jquery/

Lucid, Lion, and Time Machine

http://www.ubuntugeek.com/getting-timemachine-to-work-under-ubuntu-10-04-lts-os-x-lion.html

Block brute force attacks (fail2ban)

http://linuxpoison.blogspot.com/2011/12/block-brute-force-attempts-on-ubuntu.html

Open replacements for communication apps

http://www.datamation.com/open-source/60-open-source-replacements-for-communications-software-1.html

A text-pased password manager

http://linuxpoison.blogspot.com/2011/11/text-based-password-manager-using.html

A ‘DIY Dropbox’

https://github.com/sickill/bitpocket

Set up a remote LAMP server (Ubuntu)

http://www.linuxforu.com/2011/12/setting-up-a-lamp-server-remotely/