One very important thing I forgot to mention were some of the new tools that I've learned about in the last few weeks that I've been starting to use to help with keeping yourself "safe" online. I say "safe" because these are just minor steps you can take to overall help with the larger picture.
If you haven't already I would highly recommend making an account on Aspirations Social Source Commons http://socialsourcecommons.org/ Not only can you see what great software and tools are using but you can create your own toolbox to show others what software you like to use. The tool box Secure & Private Web Browsing http://socialsourcecommons.org/toolbox/show/2779/ has a bundle of awesome plug ins/ applications that should not be overlooked.
Personally, I'll list the few that I feel everyone should have installed in their web browser/computer. If your using Firefox, then you might want to install collusion https://secure.toolness.com/xpi/collusion.html Collusion paints a nice graph that shows you who is actually tracking you in real time. Browse the web for a bit then check out who is tracking you. If this doesn't freak you then I'm not sure what will. I would also highly recommend Priv 3 (protects you from social networks tracking you) https://addons.mozilla.org/en-us/firefox/addon/priv3/ I would also recommend ghostery http://www.ghostery.com/ (shows you who is tracking you and allows you block them if you please) Lastly, if you really want to be anonymous then downloading and installing the Tor Browser wouldn't be a bad idea. https://www.torproject.org/ The Tor Browser allows you to browse the Internet anonymously. Although, a bit slow it's definitely worth installing and playing around with. Even though this is just scratching the surface of what you can do it. The first step is the best step to when it comes to keeping yourself safe and secure. I hope these tools are helpful. I'm still in the process of learning best practices but these are the few tools that I've picked up thus far. Let me know what you all think!