You must be very particular when you choose tutorials because Adobe chose to name the two Lightroom versions so similarly. There is Lightroom Classic, which stores images on the local hard drive and utilizes a local catalog, and there is Lightroom which stores all your images in the cloud. The user interface (panels and layouts) ARE totally different, and tutorials for the one version are not going to be very helpful for the other because the feature sets are quite different.
In reality, "Lightroom CC" is an old designation that no longer holds true as a name for either version, although some tutorials even from Adobe still use that name. It hasn't been used as the official name for either version for quite some time.
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