... or just tips would be appreciated
A few to consider:
You cannot cut and paste files in the Finder as you can in Explorer. To move or copy a file from one place to another, the Mac way is to open both the Target and Source folders, then drag and drop the file or folder.
The green button at the top does not expand the window to fill your screen. Very few windows need the full screen, so what that does is expand the window so it's large enough to handle the content. This will almost always leave some background visible.
You cannot see the size of a file or folder by holding your mouse over it. You must highlight the item and use Get Info. There are at least four ways to use Get Info, three of them involving the mouse.
If you have two folders with the same name, but have a few differences between the contents of same, don't move one to the enclosing folder of the other. OSX will not automatically merge the contents of the two folders. Instead, it will overwrite the target folder with the one you're moving. The differences in the target folder will be lost forever.