をください => Please give me N N5
Asking and Telling
お…くださる => Please do ~ (honorific) N3
Respectful, humble
てください => please do N5
をくださいませんか => Please give me A (polite) N5
Asking and Telling
~てください => Please do ~ N5
Asking and Telling
ないでください => please don't do N5
させてください/させてもらえますか/させてもらえませんか => please let me do N3
~ないでください => Please don't do~ N5
Asking and Telling
さえ/にさえ/でさえ => Even N3
Not only, Not even
... おぼえはない => don't remember... N3
Position, perspective
ただでさえ => ordinary; usual... also... N2
Description
てください   => let, to ask someone to please do ~ N5
Invite and advise