"<em>So, I started painstakingly slow to look up the letters one by one and putting the words together. Then it occurred to me that learning the script first might be quicker, so I watched some videos and then practiced with the Green owl app.</em>"
Miriam, did it work?
I always advise the opposite:)
Namely I always tell that "learning an alphabet" is essentially a way to put an artificial obstacle for your brain, and to learn it effortlessly you should not learn it, you should use it. E.g. "decifer" some texts written in the alphabet. That is, exactly do the "painstakingly slow thing". It works for me. After half a hour I usually rememebr most letters. But of course I'll forget them, unless I read and or write some words once in a while.
It works for my langauge partner who complained that she's not very good at remembering alphabets, until she had to look up some Berber words in a Tifinagh Berber dictionary: soon she remembered Tifinagh characters. Right now, I think, she has forgotten them, because she only used the alphabet for one evening. But she knows that she always can repeat the experience.
But I never tried apps. Maybe Green owl is just as good.