it's the EasyPrivacy filter I'm pointing to which is a part of ABP but needs to be added.
If you are going to play with the Hosts file save a copy of the original one so you can put it back and make a shortcut on the desktop to the hosts file or else it gets tedious going in and out of it.
Nowt wrong with turning into a geek. You only learn by tinkering and making mistakes.
What i find is if you really lock your browser down sometimes a webpage or link won't work. Have another browser for one-off use that is not so locked down for when you really need a particular facility or access. Java is a good example of not allowing it in your main browser but have the plugin available to enable in another.
Even if you don't end up using the Hosts to block stuff, if you learn and play with what that site teaches you it increases your overall pc knowledge.