Tips on how to eat own cum

I know, for others it is disgusting. But in my case, i really want to try because i'm curious on it's taste. I tried to do it before, but once i shoot my load, my courage completely disappears.. i already tasted my precum but not my own cum. please give me some tips. i really want to try it. thanks

* please give me also some tips on how to prolong orgasm even after ejaculation.