But to that point, yes! Chinese and Korean both share a lot of STUFF, and though I don't know Korean at all I'm guessing that you will benefit HIGHLY from getting Japanese explained with reference to levels of politeness and cognate words &c. As a Chinese speaker, I was conversely baffled by grammar for a while but had ALL THE CHEATCODES for kanji, so with our powers combined...
One way or another, being able to make comparisons from a base language to a new language always helps, if nothing else to shine light on negative spaces or to have a mental aid that works for you. If you pick up any JLPT books, you'll quickly see that a lot of material is actually quadrilingual with translations for English, Chinese, Korean, and Japanese for the grammar and vocabulary sections -- a lot of speakers pick up J from C or K. I can scan some for you if that's interesting!
Re: first flailing attempt at translation
But to that point, yes! Chinese and Korean both share a lot of STUFF, and though I don't know Korean at all I'm guessing that you will benefit HIGHLY from getting Japanese explained with reference to levels of politeness and cognate words &c. As a Chinese speaker, I was conversely baffled by grammar for a while but had ALL THE CHEATCODES for kanji, so with our powers combined...
One way or another, being able to make comparisons from a base language to a new language always helps, if nothing else to shine light on negative spaces or to have a mental aid that works for you. If you pick up any JLPT books, you'll quickly see that a lot of material is actually quadrilingual with translations for English, Chinese, Korean, and Japanese for the grammar and vocabulary sections -- a lot of speakers pick up J from C or K. I can scan some for you if that's interesting!