Illustrator 23

Been using illustrator 23 for many years now and for some reason I went down stairs to my first computer. Was able to pull up my first illustrator CS6 and was amazed at what I could do. It does much more than the new one now. I was so pleased, I was able to find a illustrator CS6 book on ebay & ended up taking all my files downstairs to the old computer. Just to let you know. Linda