I have pse10 on mac from the app store and looking through lessons for it all start with organise but I cannot find it.
Can anyone tell me if it is part of this version or how to get it.
The app store version doesn't include organizer. The app store page does mention this, but it's way down in the info that appears when you click More. If you want organizer, the only way to get it is to use the Report a Problem link in your receipt to get a refund and then buy PSE someplace else.