Usually, the first thing you want to change is the icons. There are few folders that you need to take note of. From your root project directory, assets can be changed or customized in the following directories.
Pay attention these files are React components and you can change them correctly. When the changes are done, generate your new files by running...
To change the about screen, head on to ./src/ui/components/AboutDialog/index.tsx where you can change the copyright. If you've changed the logo already, it will automatically reflect on this page.