I don't believe such a guide exists, at least not on the Strawberry Wiki.
I can offer a few basic suggestions for a beginner.
Strawberry plays music in playlists. No matter what the source of the song, it will always open in a playlist. Playlist management is too lengthy to get into here, but you can create, label, save and "favorite" playlists.
Strawberry can play from any folder on your computer by selecting "Files" in the sidebar.
If you go a step further and point Strawberry to a folder in Settings > Collection, it will show the songs as a "library" when selecting "Collection" in the sidebar.
I would hold off with using anything that says "Organzie Files" at first. (There are naming and sorting options that you may want to consider.)
Go through all the settings, slowly and methodically. Make a note of your changes so you can revert if necessary.
Use the tool-tip notes by hovering your cursor over icons, etc.
And use your right click to display the many options available.