UPDATED March 2020 to work with the new version of RaspbianBuster. ... A micro SD card — Here we will install the RaspbianBuster Lite.
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...hands-on dialog, here are a couple of links that contain interesting and useful information about the new Raspberry Pi 4 and RaspbianBuster operating system
Like previous Raspbian updates, Busters mostly fixes security vulnerabilities and makes small technical changes under the hood—basically, it's harder to hack.