As a native Cantonese speaker, I want to know what are the common struggles for beginners to learn Cantonese

Hi, I am a local in Hong Kong, and I speak Cantonese since I born for years. And I would like to know what do beginners find the main difficulties while learning Cantonese.

I personally is also trying to learn Japanese, so I find some general difficulties like, don't know where to start, don't know where to systemetically learn a language in a cheap way, easily and enjoyably memorizing vocabularies ... etc.

Anything more you would like to share?