Reading package lists... Done
Building dependency tree
Reading state information... Done
build-essential is already the newest version (12.1ubuntu2).
libusb-1.0-0-dev is already the newest version (2:1.0.20-1).
libusb-1.0-0-dev set to manually installed.
pkg-config is already the newest version (0.29.1-0ubuntu1).
0 upgraded, 0 newly installed, 0 to remove and 53 not upgraded.
Could anyone help such a beginner with this? What I have to do?