Raspberry Pi 4 Topics
Raspberry Pi 4 8GB version is available now and the Pi OS is updated recently. There are news and changes. Some topics could be quite helpful for you:
New Pi OS sound trouble shooting - Pi OS May 2020 version is slightly different in audio configuration for headphone jack output.
Mount and access external media - One little trick to access removable media easily.
Boot Pi OS from USB - and install multiple systems. Big fun if you have a big and fast USB SSD drive.