Personally, I prefer the Dead people are annoying. Avoid them at all costs. That's something that would speak to me, from a fifteen year old's perspectives. If my age isn't your target audience, then I would suggest something else.
Let me explain. doesn't feel like a good opener to me. Now, as an ending to a paragraph, perfect! A quick summary of what's going on in a vague way and then that.
* * * I try to always do right. Even if I sometimes fail. * * *