[Tutor] Nodes and Queues?

[Clara Mintz]

Hi all
I am sorry I am a beginner at python and I was reading my book and I came across the terms Nodes and Queue. I am sorry but I don't quite understand how they work. Is there anyone who could possibly explain them in simple terms? Thank you so much. 
Sincerely, 
Clara 		 	   		  
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