updated 9-29-2020
Updated, fully working source code is now attached to each applicable lecture and downloadable as a zip file. The code will contain all fixes and updates mentioned in the course notes.
Link to download NodeJS Installer
https://nodejs.org/en/download/current/
[Optional] Editor add-on to auto-format your JS
https://github.com/prettier/prettier
Download the code attached to each lecture and compare it with your code using a diffing tool of your choice.
Udemy Discussion Threads
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There may be a solution for your issue already answered on Github or StackOverflow
You can view all course diagrams on your own here: https://github.com/StephenGrider/FullstackReactCode/tree/master/diagrams
All diagrams are authored using https://www.draw.io/
Clone down the entire Github repo to your computer. Go to draw.io, then choose "Open Existing Diagram" and use the file explorer to open a diagram file from your computer.