All you have to do, literally, all you have to do is google osara reaper and the first result is the one you want. It is not something you have to buy, though the author does appreciate donations for his hard work.
Seriously, I am all for helping people, but try to help yourself first. It's 2018, so unless you're over 50 or so, and believe me, I have a 75 year old grandmother who has an iPhone, knows how to use it, a computer, knows how to use it and the internet. There's no excuse for not being able to google something, or use whichever search engine you prefer if google isn't your cup of tea. Anything else is just laziness imho. Now, if OP had a specific question like I'm not sure whether to install the keymap or not, or its not working after I installed, then I would do everything in my power including one on one skype or teamtalk sessions to get it working if that's what it took. But if someone comes on here and can't take the two seconds to try to type a query into google, I just have no desire to help that person. It shows they want everything handed down to them. The old saying, "Give a man a fish and he eats for a day, teach a man to fish, he eats for a lifetime" is strong in my mind as I write this. @op, I have no malice towards you as I write this, I'm sorry if it comes off that way, its more a sort of rumbling anger towards society which has all the information they could ever want on a subject, and they're too god damned lazy to type a few words into a search engine and look at the first 5 results, either the first or second one is probably what you wanted in most cases.
Facts with Tom MacDonald, Adam Calhoun, and Dax
End racism
End division
Become united