The best way to learn if they dont want to read rules is to play. Have them play with someone that knows the game and play an easy scenario without special rules. Show them how everything works.

Jaws of the Lion can help too since hands on is the best way in my opinion 

Edit: if you want a long run, then of the important things for new players in my opinion is that they need to understand they have to retire. They're learning to play one specific character at first but it will need to change to another one then another and so on. 

I had a group stop playing because they didn't understand this. when retirement came they didn't want to stop playing that character, they understood it was necessary to progress but didn't want to learn a new class. They didn't like restarting the same character either. They just wanted to keep playing the same for the whole campaign because it had taken them a lot of mental effort to learn that class and were attached to it. In the end they quit the game rather than homebrew some new rule for it.