Where would the best place to look for Lightroom Classic tutorials, here in Adobe Support Community, or from YouTube, I have not used Lightroom Classic before, so this will be a learing process, would like to get the best out og Lightroom making the photos that I do take even better.
My suggestion be to start slow. Import some pictures, do minuimal post processing work, the print or export your work. From there, start getting into more depth with each module.
Once you start in earnest, I'd recommend ensuring you are filling in metadata about your photos including keywording. This takes discipline but pays benefits in the future when you are trying to find photos.
Also, remember, depending on your style, you don't have to use all the features available. You will find you expand your use over time,
I have taken several Lightroom courses on Creative Live, and they frequently offer free or heavily discounted courses. Ben Willmore and Jared Platt are both excellent instructors, and they also offer plenty of free tips and tricks on their YouTube channels.