Hi Jim, thank you for the welcome. After a hectic weekend at family wedding back to normality. After a flying career on helicopters in the Royal Navy i took up flight sim on Microsoft 2000, flying all scenarios and a box load of add ons. Now having just purchased a Mac OS X El Capitan, those programmes are not for this machine so thought buy X plane 10 Global, after seeing you tube videos with all the attendances of push back cargo loading and flight services great, loaded up all discs but the free add on would not load. Found out faulty disc have returned for replacement. Started up programme and flew cessna, but have no clue how to use rest of set up. Are all the support services on add ons? On Microsoft 2000 could programme all flights, weather Captain speaking, ATC, but looking at x plane everything has moved on, especially graphics, scenery,support services. Any Advice welcome regards Bob