I was started on Apple computers in 1997 by a friend's husband who sold them In the meantime all these computers are museum pieces!
I have Mac Mini at the moment and I always buy the Missing Manual by David Pogue. Whatever your system MacOX is, then there is a book by him which definitely helps. He has written about ITunes and I Life and can really explain things step by step.You can get them on amazon, sometimes cheap.
Re painting metal bistro garden set