Hello,
As a Jordanian i would say it’s very hard to learn on your own, most of the local requires spices and salt and you won’t find a book telling how much salt to put in Mansaf, so there is two options here,
1- go to royal academy near the medical city and join a course
Or 2- you can make it more interesting by visiting local villages and ask from old women to teach you, just pay for the ingredients and they will be more than happy, but you should know you will need someone who can speak Arabic.
Best of luck.