While you review a game here are questions to ask. Did I make a mistake in the opening? What mistake did I or the opponent make, and what did I miss? things you might have missed are free pieces, tactics, and weaknesses. For super new players you should first check the meanings of chess terms and learn basic principles in the opening and then learn how to make a plan and blunder check your moves and your opponent’s to see blunders from both sides. You should compare your lines to engine lines to see what the engine wants to do and why your move is wrong.
Can anybody tell me what one is supposed to do with the analysis tool? I've not found any good uses for it.