Here at App Academy, our browser of choice is Google Chrome. This isn't super important at the beginning of the course, but once we get into frontend development (writing code that runs in a web browser) the Chrome DevTools will be crucial for debugging every manner of issue. Other browsers do include DevTools, but they may work slightly differently than the ones in Google Chrome.
If you want to follow along with instructors and our curriculum you will want to make sure you install Google Chrome or it's open source equivalent, Chromium.
To install Google Chrome, download the necessary files and follow the instructions on the Google Chrome website.
macOS users should just download the Google Chrome DMG (Disk image) file and double click on it to mount it as a drive. Then drag the Chrome icon to your Applications Folder, then you can eject the Google Chrome Disk Image by dragging it to the Trash.
Windows users should run the downloaded Chrome installer application, and follow the instructions.
Ubuntu users should download the .deb version of Google Chrome and double click on it from the Downloads folder in the file manager.