Meaning of "Please, be done!" and "Way to go!"

Hello everybody and nice to meet you!
My name’s Astrid and I wish you gave me an explanation about the meaning of these two expressions: “Please, be done!” and “Way to go!”.
Thank you in advance (and sorry for my bad english)!

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Hello Astrid, and welcome to English-test.net.

“Please, be done!” – This does not sound colloquial to me, but may be so in other Englishes. I presume it means ‘Please stop!’

“Way to go!”– This means ‘Well done!’ Often it used used sarcastically.
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Thank you very much for answering me Mister Micawber, you made it clearer to me!