[leon037]

Both pairs of sentences would be correct and roughly equivalent if you prefaced them with "could you". As they stand, the 2nd pair sounds somewhat incomplete.

Kindly and please are adverbs that have some overlap of meaning depending on context.
It may help you to look carefully at the meaning of both words:
Please is a polite way of asking that a favor be done,
Kindly asks that the favor be done out of kindness, which can give the sentence a slightly different meaning.

Hopefully that helps a little...