I have an insanely hot pepper: now what?
Have you ever eaten something so hot it made you cry and felt like it'd never stop burning? Given what you've said you've tried, this thing is probably 10-100x as hot as the kind of pepper that would do that to you. Please be careful.

In any case, pretty much the sole point of a pepper like this is to try to be the hottest thing in the world. The amount of capsaicin is incredibly huge compared to the amount of other flavor in it; you're basically never going to taste anything but heat from it. So if you want to actually use it, just assume that the only thing you can do with it is make something hot. 

I have a decent heat tolerance and love things with a bit of heat, but I still probably wouldn't bother. There are plenty of ways to add heat with much less risk of creating something completely inedible. If I really wanted to make use of it, I'd probably start with a very small quantity in a dish to try to get a sense for the heat level. This means using it in some kind of soup/stew/sauce where you can incrementally add things as you cook, not in something like a cake where you have to just go for it and possibly end up throwing away a whole cake. (For some peppers I might also try touching it to my tongue first, but I don't think I'd recommend that in this case.) 

Finally, you can always try to cover it up by using it in a rich, fatty dish, e.g. a sauce with plenty of cream or coconut milk, but honestly, you'll still be lucky if you can taste anything from the pepper besides the heat.