I think spoken it doesn't make much difference as people know from your tone if you are asking nicely or not, but written "Please answer my question" seems polite while "Answer my question, please" seems tetchy/irritable in isolation, although the assumption about the tone could vary in different contexts.

Would you kindly, answer my question?

1. Please, could you get me that bottle of water. = A mutual respect.

2. I really need that bottle of water, please! = pleading, like mercy, showing submission.

3. That water, get it for me now....please. = A grudging but recognisable form of request and adherence to manners.

Go with 1. in tone. Always. You can add Thank you onto 1. or wait until you receive.

I normally say thank you, I dont say please as often, I understand that I am un inventive and unskilled when it comes to social affairs.

i'm not conscious of this

It usually begins with "Guilty" or "Not". It always ends with "Guilty".

If You ask a question, "please" is a bit redundant, no? Like it´s up to the other side to give an answer.

If You don´t ask a question "please" is added for politeness reasons, or to show respect. Like the police here would have a text "please follow" - while it´s not really meant as "pleading".

In general "please" and "pleading" have not much to do with each other. Usually "please" is used if phrasing a demand, but still be nice. And i would rather ask what "pleading" should be really. Usually people tend to be upset or unfriendly if one does not follow a "plead" - so i guess it´s not really a plead to begin with. I say that "pleads" don´t exist. They´re a myth. Either people demand, or they ask.

I say please at the end. Because I like to end my sentence with please and thank you.

None please of them

please, can you plant meat seeds to grow meat trees?

can you plant meat seeds to grow meat trees, please?

please, can you try not to spread ink?

can you try not to spread ink, please?

Slap the 'please' right in the middle, to ♥♥♥♥ with people.

"Can you, please, plant some meat seeds?"

引用自 meucakesTM：

Slap the 'please' right in the middle, to ♥♥♥♥ with people.

"Can you, please, plant some meat seeds?"

*takes notes*

wondrous indeed.

"Please clap" - Jeb!

I put it in the middle of a word.
"Anspleasewer my question."

引用自 cramb：

I put it in the middle of a word.
"Anspleasewer my question."