who or whom?

so, i never know when to use who or whom most of the time; and, when i use one, it usually ends up being the wrong one!!

Here is the rule: Just use the he/him rule.

He = Who
Him = Whom

It's as easy as that

if you want to learn more you can visit this websight

Websight http://www.grammarbook.com/grammar/whoVwhom.asp