There are many sites and resources on the web that I feel can help those interested in the tech field. As I come across them or am introduced to them, I will share them here.

Router Alley – Aaron Balchunas has done a good job of creating some fine resources. He shares them at his website, including practice questions which can be helpful. It is an admirable goal to one day be able to offer the quality of tools he does.

Professor Messer – A great (and free, mostly!) resource for CompTIA certification prep. He does walkthroughs for objectives in the A+, Net+ and Sec+, as well as some other things.