I know you can't learn a language in three weeks, but let's see how I fail.
How much can I learn before my granny from Ethiopia visits?
I'm unemployed so I have time to study and I'm pretty motivated. You can often get from 0 to A1 level in a language within 100 hours of study.
I should be able to learn the writing system (it's a hard one), more than 100 words, and some amount of grammar.
Hola, I recommend Hellotalk. You might find some tutors or language partners there. I also really like the album Out Of Addis, even though I’m not sure they’re singing in Amharic since I don’t speak it. Good luck!