What to expect from a stupid spammer?

I don't learn Japanese. And I don't know Duolingo. I would prefer an app that does just ONE language - but it's free , just try it. HeyJapan > I guess they have a free trial anyway. Here they mention also LingoDeer. https://saltygaijin.com/the-best-ways-to-learn-japanese-on-your-own/

From my experience it's difficult to make use of a language partner. It's also questionable if you can learn much. You like already reading - read more. Reading is a VERY GOOD way to learn a language. Just make sure you read something that is not too much above your level, and also which is interesting to you. Movies, TV is good too - what them with English subtitles - and English subtitles ONLY. I mean to study (again) 汉语, but level is very poor, maybe HSK 2-3. I would love to watch 三体 (the Chinese TV series, not the Netflix one) but that seems way way way above my level. 加油！

2b.) Schenken ist immer ein Geschenk (engl. gift) Geben kann ein Geschenk sein, muss aber nicht. Ich gebe dir mein Auto, aber nur für heute!

>lots of exceptions exist! Spoken languages ain't math. There is not really much logic in any spoken language.

Chinese ain't a language. You mean Mandarin I guess. For Cantonese the problems will be totally different.

 

This said, Mandarin speaker can manage often a very good US accent. Cantonese speaker need a to work a little bit harder ;-)

Make sure your eReader can actually display Japanese. My Sony has trouble with Chinese characters and I have to do some tricks to make them show up. 

 

No idea about Kindle, but if it's used in Japan it should be OK, however, I wouldn't buy a Kindle due to the epub support.