Right now I'm just parroting the first third (not even) of the Chicago Price Theory Textbook. What chicago basically does is for the first third of Micro, instead of doing a big proof-based micro course like MWG or whatever, it takes a heavily simplified applied micro approach to building simple models to generate hypothesis. So you really don't need much more than some linear algebra and calc 3 (lagrangians are ever-present) to get what's going on. I'm taking some time this summer to try to get through it, even though I've been chewing on it for the past year (engineering school is hard, don't judge me for being a slow reader lol).
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You can find the website for it here: https://home.uchicago.edu/cbm4/cpt/index.html and the associated youtube lectures here: https://home.uchicago.edu/cbm4/cpt/videos.html .
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The book is $50 on amazon ( https://www.amazon.com/Chicago-Price-Theory-Sonia-Jaffe/dp/0691192979), and I would recommend it if you're going to seriously do the course because having 2 explanations of the same thing is much better when you're stuck than having one. My only complaint about the book is that the first few chapters are a lot of set up- It's hard to plow through them because you don't see the applications to real-world issues until later on. This has caused me to do a lot of yo-yoing when it comes to learning the material. I guess it's kinda for the best because the first few chapters have really gotten stuck in my head, but we'll see if that's useful as I approach the second third.