Poor Documentation – How to activate Filters and other features?

There isn’t a single line of documentation thats written for people who don’t speak code or php (I believe). There are no man pages, theres nothing more than just code, expecting wordpress users to know what the heck you are talking about in your very limited documentation. If you help me learn this, I will create a wiki for you with excellent documentation so people know what the hell they are doing.

Now, to get to my question…
How exactly do I enable additional features like blocking enumeration attempts and what not. The only thing I can find is one locked user question on here asking where we insert the filters. To which you replied “in the functions.php file”. Well, that doesn’t mean anything to me since there are multiple functions.php files. There are ones for themes, plugins, and for the main wordpress api. Where exactly do we put these additional filters and settings in order to block login and enumeration attempts. How do I even know if this plugin is working? I hate so sound like a critical a-hole, but this really is some of the poorest documentation I’ve seen in a long time. Could you please help me out in understanding this? I would like to implement security of my wordpress site using fail2ban for assistance and this seems like the way to go. But then again, I don’t even know what this thing is doing, because, well, there is nothing documenting it in the first place. Please, Teach me, and let me build a man page for this plugin so people know what the hell they are doing. Thanks for any answers.

The page I need help with: [log in to see the link]